Fasteners & Mounting
Marine Hardware & Installation
Marine Fasteners, Mounting Hardware & Installation Supplies
Shop marine-grade screws, bolts, nuts, washers, brackets, backing plates, rivets, mounting pads, sealants, thread lockers, and anti-seize for secure hardware installations in saltwater environments.
Match metal grade, fastener size, thread type, backing support, bedding compound, and load direction before drilling into the boat.
Use marine-grade hardware and proper sealing practices. Confirm load ratings, material compatibility, corrosion risk, deck core protection, and manufacturer instructions before installation.
Popular Fastener & Mounting Searches
Fitment
Choose the Right Metal, Size, and Support
Marine fasteners need to match the job. Consider stainless grade, length, diameter, head style, thread type, washer size, backing plate needs, and whether the hardware is loaded in pull, shear, or vibration.
Corrosion
Saltwater Hardware Needs Material Discipline
316 stainless is commonly preferred for saltwater exposure, while 304 stainless may suit freshwater or less demanding areas. Isolate dissimilar metals where needed and use anti-seize on stainless threads to reduce galling.
If a fastener is structural or safety-critical, confirm the correct grade, torque, backing, and installation method.
Stainless Fasteners
Screws, bolts, nuts, washers, threaded rod, lock nuts, and specialty head styles for marine repair and upgrades.
Mounting Hardware
Brackets, bases, pads, backing plates, antenna mounts, rod holder mounts, and accessory supports.
Bedding & Bonding
Sealants, adhesives, thread lockers, anti-seize, and bedding compounds help hardware stay secure and watertight.
Install Notes
Seal Holes and Spread Loads
Fastener selection is only part of the job. Hardware installed through decks, cabins, rails, transoms, or cored panels needs the right pilot hole, sealant, backing, washer, and torque.
Inspection
Replace Corroded, Loose, or Mismatched Hardware
Check for rust streaks, loose brackets, elongated holes, cracked sealant, missing washers, galvanic corrosion, stripped threads, and water intrusion around mounted hardware.
Projects
Good Hardware Makes Upgrades Last
Electronics, antennas, cleats, rod holders, seats, speakers, lights, ladders, hatches, and deck fittings all rely on correctly chosen mounting hardware.
For heavy or safety-related gear, do a dry fit, mark hole locations carefully, and confirm access to the backside before drilling.
FAQ
Marine Fastener Questions
Should I use 304 or 316 stainless fasteners on a boat?
316 stainless is usually preferred for saltwater and exposed marine use because it has stronger corrosion resistance. 304 stainless can be suitable for freshwater or less exposed applications.
Why do stainless fasteners seize or gall?
Stainless threads can gall when tightened under friction, especially stainless-on-stainless. Anti-seize, correct thread engagement, and careful tightening can help reduce the risk.
When do I need a backing plate?
Use backing plates when hardware carries significant load, such as cleats, rails, ladders, davits, seats, and deck fittings. Backing plates spread load and help prevent crushing or pull-through.
Should deck fasteners be sealed?
Yes. Holes through decks, cabins, and cored panels should be sealed with the correct marine bedding compound to help prevent leaks and core damage.
Ready for a Stronger Install?
Shop Marine Fasteners, Brackets, Backing Plates & Sealants
Search by fastener type, material, size, head style, mounting application, sealant need, bracket type, or installation project.
Filters
Phillips Machine Screw - Flat Head, 5/16"-18 x 2-1/2"
Phillips machine screw with a flat head for secure fastening. 5/16"-18 UNC thread, 2-1/2" long. Made from 18-8 stainless steel for corrosion resist...
View full detailsPhillips Machine Screw - Flat Head, 5/16"-18 x 2"
Phillips Machine Screw - Flat Head, 5/16\"-18 x 2\" (18-8 stainless steel) provides durable, corrosion-resistant fastening for general assemblies r...
View full detailsPhillips Machine Screw - Flat Head, 5/16"-18 x 1-1/2"
Phillips Machine Screw - Flat Head, 5/16\"-18 x 1-1/2\" in 18-8 stainless steel. This bulk fastener is designed for general mounting and hardware p...
View full detailsPhillips Machine Screw - Oval Head, 10-24 x 1-1/2"
Phillips machine screw with an oval head. Size 10-24 x 1-1/2 inches. Made from 18-8 stainless steel for corrosion resistance.Ideal for bulk fastene...
View full detailsPhillips Machine Screw - Pan Head. 10-32 x 5/8"
Phillips pan-head machine screw, 10-32 thread, 5/8\" long. Made from 18-8 stainless steel for strength and corrosion resistance.Compatible Applicat...
View full detailsPhillips Machine Screw - Pan Head. 10-24 x 4"
Phillips machine screw, pan head, 10-24 x 4". Made from 18-8 stainless steel for corrosion resistance.Compatible Applications Bulk fastener supply ...
View full detailsPhillips Machine Screw - Pan Head. 10-32 x 1/2"
Phillips machine screw with a pan head. Thread size 10-32, length 1/2 inch. Made from 18-8 stainless steel for durability and corrosion resistance....
View full detailsPhillips Machine Screw - Oval Head, 5/16"-18 x 4"
18-8 stainless steel Phillips oval-head machine screw, 5/16"-18 x 4". This screw combines corrosion resistance with dependable strength for metal f...
View full detailsPhillips Machine Screw - Oval Head, 10-24 x 3/4"
Phillips Machine Screw - Oval Head, 10-24 x 3/4" in 18-8 stainless steel provides durable, corrosion-resistant fastening for general metal-to-metal...
View full detailsPhillips Machine Screw - Oval Head, 5/16"-18 x 3"
Phillips machine screw with an oval head for a clean, flush finish. This 5/16\"-18 x 3\" fastener is made from 18-8 stainless steel for corrosion r...
View full detailsPhillips Machine Screw - Oval Head, 5/16"-18 x 2-1/2"
Phillips Machine Screw - Oval Head, 5/16\"-18 x 2-1/2\"Made from 18-8 stainless steel for corrosion resistance and long service life. Thread size: ...
View full detailsPhillips Machine Screw - Oval Head, 10-24 x 1"
Phillips Machine Screw - Oval Head, 10-24 x 1". Made from 18-8 stainless steel for corrosion resistance and durability. Drive Type: Phillips; Head:...
View full detailsPhillips Machine Screw - Oval Head, 5/16"-18 x 1-1/2"
Phillips Machine Screw - Oval Head, 5/16"-18 thread, 1-1/2" long. Made from 18-8 stainless steel for corrosion resistance.Compatible Applications G...
View full detailsPhillips Machine Screw - Flat Head, 5/16"-18 x 1-1/4"
Phillips machine screw — flat head, 5/16\"-18 thread, 1-1/4\" long. Made from 18-8 stainless steel for corrosion resistance.Compatible Applications...
View full detailsPhillips Machine Screw - Pan Head. 10-24 x 2"
Phillips machine screw with a pan head, 18-8 stainless steel, 10-24 thread, 2" long. This bulk fastener is suitable for general mounting and fasten...
View full detailsPhillips Machine Screw - Oval Head, 10-24 x 1-1/4"
18-8 Stainless Steel machine screw with an oval head for flush seating. Size 10-24 x 1-1/4". Compatible Applications: Marine fasteners and mounting...
View full detailsPhillips Machine Screw - Pan Head. 10-24 x 3"
Phillips Machine Screw - Pan Head, 10-24 UNC, 3 in length. Made from 18-8 stainless steel for corrosion resistance.Pan-head machine screw with Phil...
View full detailsPhillips Machine Screw - Pan Head. 10-24 x 2-1/2"
Phillips machine screw with a pan head. Size #10-24 x 2-1/2 inches. Made from 18-8 stainless steel for corrosion resistance. General fastening for ...
View full detailsPhillips Machine Screw - Oval Head, 5/16"-18 x 2"
Oval-head Phillips machine screw, 5/16\"-18 thread, 2\" long. Made from 18-8 stainless steel. Parts Desk Insights Best use: general fastening in...
View full detailsPhillips Machine Screw - Pan Head. 5/16"-18 x 3"
Phillips machine screw, pan head, 5/16-18 x 3 inches. Made from 18-8 stainless steel.Compatible Applications Bulk fastening and mounting projects H...
View full detailsPhillips Machine Screw - Oval Head, 8-32 x 1-1/2"
18-8 stainless steel Phillips machine screw with an oval head. 8-32 thread size, 1-1/2" long. Drive: Phillips Head: Oval Thread size: 8-32 Length:...
View full detailsPhillips Machine Screw - Pan Head. 10-24 x 1-3/4"
Phillips machine screw — pan head, 10-24 x 1-3/4 inches. Made from 18-8 stainless steel for corrosion resistance and durability in bulk fastener ap...
View full detailsPhillips Machine Screw - Oval Head, 8-32 x 2"
Phillips Machine Screw with oval head and 8-32 thread, made from 18-8 stainless steel. This Phillips-drive fastener is designed for secure, low-pro...
View full detailsPhillips Machine Screw - Pan Head. 10-24 x 1-1/2"
Phillips machine screw with a pan head, 10-24 x 1-1/2", in 18-8 stainless steel for durable, corrosion-resistant performance. Compatible Applicatio...
View full detailsPhillips Machine Screw - Pan Head. 10-24 x 1-1/4"
Phillips pan-head machine screw, 10-24 thread, 1-1/4 in long. Made from 18-8 stainless steel for corrosion resistance. General fastening in machine...
View full detailsPhillips Machine Screw - Oval Head, 1/4"-20 x 5"
Phillips Machine Screw - Oval Head, 1/4-20 x 5 in, 18-8 stainless steel for corrosion resistance.Compatible Applications: Machinery and equipment a...
View full detailsPhillips Machine Screw - Flat Head, 1/4"-20 x 3"
Phillips Machine Screw - Flat Head, 1/4\"-20 x 3\" in 18-8 stainless steel.This machine screw is designed for fastening into pre-tapped holes or nu...
View full detailsPhillips Machine Screw - Flat Head, 1/4"-20 x 4"
Phillips Machine Screw - Flat Head, 1/4" x 4" (1/4"-20 thread). Made from 18-8 stainless steel for corrosion resistance and durability.Compatible A...
View full detailsPhillips Machine Screw - Oval Head, 1/4"-20 x 4"
Phillips Machine Screw - Oval Head, 1/4\"-20 x 4\". Made from 18-8 stainless steel, this machine screw features a Phillips drive and an oval head.\...
View full detailsPhillips Machine Screw - Oval Head, 8-32 x 1"
Phillips Machine Screw - Oval Head, 8-32 x 1\" in 18-8 stainless steel. This bulk fastener features a low-profile oval head and a Phillips drive fo...
View full detailsPhillips Machine Screw - Flat Head, 1/4"-20 x 3-1/2"
Phillips machine screw, flat head, 1/4"-20 thread with a length of 3-1/2". Made from 18-8 stainless steel for corrosion-resistant performance in ap...
View full detailsPhillips Machine Screw - Pan Head. 10-24 x 1"
Phillips machine screw, pan head. Size #10-24 x 1 inch. Material: 18-8 stainless steel, offering corrosion resistance.Compatible Applications Gener...
View full detailsPhillips Machine Screw - Pan Head. 5/16"-18 x 1-1/2"
Phillips Machine Screw - Pan Head, 5/16\"-18 x 1-1/2\". Made from 18-8 stainless steel for corrosion resistance and long‑lasting performance.Ideal ...
View full detailsPhillips Machine Screw - Pan Head. 5/16"-18 x 2-1/2"
Phillips machine screw with a pan head, 5/16"-18 thread, and 2-1/2" length. Made from 18-8 stainless steel for corrosion resistance in marine and g...
View full detailsPhillips Machine Screw - Flat Head, 1/4"-20 x 2-1/2"
Phillips machine screw with flat head, 1/4"-20 thread, and 2-1/2" length. Made from 18-8 stainless steel for corrosion resistance, ideal for bulk f...
View full detailsPhillips Machine Screw - Oval Head, 1/4"-20 x 3-1/2"
Phillips machine screw with an oval head in 1/4"-20 size and 3-1/2" length. Made from 18-8 stainless steel for corrosion resistance in a variety of...
View full detailsPhillips Machine Screw - Oval Head, 8-32 x 3/4"
Phillips machine screw with oval head, 8-32 thread, 3/4 inch length. Made from 18-8 stainless steel for corrosion resistance in general fastening t...
View full detailsPhillips Machine Screw - Pan Head. 5/16"-18 x 2"
Durable, corrosion‑resistant Phillips pan-head machine screw crafted from 18‑8 stainless steel. Ideal for metal‑to‑metal fastening in marine and ou...
View full detailsPhillips Machine Screw - Oval Head, 1/4"-20 x 3"
Phillips machine screw with an oval head. This 1/4\"-20, 3\" long screw is made from 18-8 stainless steel for corrosion resistance.Key features Ova...
View full detailsPhillips Machine Screw - Pan Head. 10-24 x 3/4"
Pan head machine screw — 10-24 x 3/4". Made from 18-8 stainless steel for corrosion resistance. Best uses: General purpose fastening for metal-to-m...
View full detailsPhillips Machine Screw - Flat Head, 1/4"-20 x 1-3/4"
Phillips Machine Screw - Flat Head, 1/4\"-20 x 1-3/4\" in 18-8 stainless steel. This flat-head machine screw is designed for flush mounting in 1/4-...
View full detailsPhillips Machine Screw - Flat Head, 1/4"-20 x 1-1/2"
Phillips machine screw with a flat head. This fastener features a 1/4"-20 thread and is 1-1/2" long, constructed from 18-8 stainless steel for corr...
View full detailsPhillips Machine Screw - Oval Head, 1/4"-20 x 2-1/2"
Phillips machine screw, oval head, 1/4-20 thread, 2-1/2" long. Made from 18-8 stainless steel for corrosion resistance. Key features: Oval-head des...
View full detailsPhillips Machine Screw - Oval Head, 1/4"-20 x 2"
Phillips Machine Screw - Oval Head, 1/4\"-20 x 2\".Material: 18-8 stainless steel.Bulk fastener with a Phillips drive and oval head for use in asse...
View full detailsPhillips Machine Screw - Pan Head. 10-24 x 5/8"
Phillips machine screw with a pan head, size 10-24 x 5/8\". Made from 18-8 stainless steel for corrosion resistance.Compatible Applications General...
View full detailsPhillips Machine Screw - Flat Head, 1/4"-20 x 2"
Flat head Phillips machine screw, 1/4"-20 x 2". Made from 18-8 stainless steel for corrosion resistance. Flat head, Phillips drive Thread size: 1/4...
View full detailsPhillips Machine Screw - Pan Head. 10-24 x 3/8"
Phillips machine screw with a pan head. Size 10-24 x 3/8 in. Made from 18-8 stainless steel for corrosion resistance. Bulk fasteners and mounting h...
View full detailsPhillips Machine Screw - Flat Head, 1/4"-20 x 1-1/4"
Phillips Machine Screw - Flat Head, 1/4\"-20 x 1-1/4\" (18-8 stainless steel). Material: 18-8 stainless steel for corrosion resistance. Flat-head P...
View full details