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 Tapping Screws - Oval Head, #8 x 1"
Phillips tapping screws with an oval head in 18-8 stainless steel for marine fastening and mounting applications. Key Features Phillips drive for ...
View full detailsPhillips Tapping Screws - Oval Head, #8 x 5/8"
Reliable fastening for marine and general sheet-metal applications using Seachoice Phillips tapping screws with an oval head and 18-8 stainless ste...
View full detailsHex Nut 1/4-20
18-8 Stainless Steel.
Hex Nut 7/16-14
A coarse-thread hex nut for marine and general fastening applications—made from 18-8 stainless steel for corrosion resistance. Key Features Hex nu...
View full detailsPhillips Tapping Screws - Flat Head, #10 x 3"
Phillips tapping screws with a flat head design for secure fastening in #10 size applications. Built from 18-8 stainless steel for corrosion resist...
View full detailsPhillips Tapping Screws - Flat Head, #10 x 2"
Phillips tapping screws in 18-8 stainless steel, featuring a flat head design for fast, secure fastening in marine and general-purpose projects. Ke...
View full detailsBlind Rivet, 3/16" x 5/8"
LNS blind rivets are a simple, reliable way to join materials from one side—ideal for quick repairs and clean finishing on marine hardware and gene...
View full detailsBlind Rivet, 3/16" x 1/2"
Secure fast, clean connections in tight spaces with this aluminum blind rivet. It’s sized for a 3/16" diameter hole with a 1/2" length grip. Key Fe...
View full detailsBlind Rivet, 3/16" x 3/8"
Secure materials with a reliable aluminum blind rivet designed for clean, finished fastening from one side. Key Features Blind (one-side) fastenin...
View full detailsPhillips Tapping Screws - Oval Head, #6 x 1-1/2"
Seachoice Phillips tapping screws with an oval head design for #6 x 1-1/2" applications—built from 18-8 stainless steel for reliable corrosion resi...
View full detailsPhillips Tapping Screws - Flat Head, #10 x 2-1/2"
18-8 Stainless Steel.
Blind Rivet, 3/16" x 1/4"
Blind Rivet sized for quick, clean fastening—ideal when you need a secure connection from one side of the material. Key Features Blind rivet style...
View full detailsPhillips Tapping Screws - Flat Head, #10 x 1-1/2"
Phillips tapping screws with a flat head in #10 x 1-1/2" size. Made from 18-8 stainless steel for corrosion-resistant fastening. Key Features Phil...
View full detailsHex Nut 10-32
Secure threaded connections with this SeaChoice hex nut in 10-32 size, made from 18-8 stainless steel for corrosion-resistant marine hardware appli...
View full detailsPhillips Tapping Screws - Oval Head, #8 x 1/2"
Use these Phillips tapping screws to fasten and secure projects using durable 18-8 stainless steel hardware. Key Features Phillips drive for contr...
View full detailsPhillips Tapping Screws - Flat Head, #10 x 1-1/4"
Phillips tapping screws with a flat head for #10 applications at 1-1/4" length—made from 18-8 stainless steel for corrosion-resistant fastening in ...
View full detailsHex Nut 10-24
Secure threaded connections with this Hex Nut sized for 10-24 hardware, made from 18-8 stainless steel for dependable corrosion resistance. Key Fea...
View full detailsPhillips Tapping Screws - Flat Head, #10 x 1-3/4"
These Phillips tapping screws with a flat head are made from 18-8 stainless steel and sized for a #10 screw with a 1-3/4" length. They’re a practic...
View full detailsHex Nut 8-32
A durable 8-32 hex nut made from 18-8 stainless steel—ideal for securing marine and general-purpose hardware with consistent, corrosion-resistant t...
View full detailsPhillips Tapping Screws - Flat Head, #10 x 3/4"
These Seachoice Phillips tapping screws feature a flat head Phillips drive in #10 size and 3/4" length for fastening and assembly on marine and gen...
View full detailsPhillips Tapping Screws - Oval Head, #6 x 1-1/4"
Secure fittings with these Phillips oval head tapping screws, made from 18-8 stainless steel for reliable corrosion resistance in marine environmen...
View full detailsBlind Rivet, 3/16" x 3/4"
A marine-rated blind rivet for fastening when you need access from one side of the material. This version is built in 18-8 stainless steel with a 3...
View full detailsHex Nut 6-32
A 6-32 hex nut made from 18-8 stainless steel for corrosion-resistant, marine-style hardware applications. Key Features Size: 6-32 Type: hex nut M...
View full detailsBlind Rivet, 3/16" x 5/8"
A marine-ready blind rivet made from 18-8 stainless steel for permanent one-side fastening. Sized 3/16" x 5/8" for use when you can access only one...
View full detailsPhillips Tapping Screws - Flat Head, #10 x 5/8"
Phillips tapping screws with a flat head in #10 x 5/8" size, made from 18-8 stainless steel for corrosion resistance in demanding marine environmen...
View full detailsPhillips Tapping Screws - Flat Head, #10 x 1"
Phillips tapping screws with a flat head, sized #10 x 1" and made from 18-8 stainless steel for corrosion-resistant fastening in marine and other h...
View full detailsPhillips Tapping Screws - Oval Head, #14 x 3"
Phillips tapping screws with an oval head and #14 thread size, sized at 3" length. Made from 18-8 stainless steel for dependable corrosion resistan...
View full detailsPhillips Tapping Screws - Oval Head, #6 x 1/2"
Seachoice Phillips tapping screws with an oval head in size #6 x 1/2"—made from 18-8 stainless steel for durable, corrosion-resistant fastening. Ke...
View full detailsPhillips Tapping Screws - Oval Head, #6 x 1"
Phillips tapping screws with an oval head and #6 x 1" size for secure, self-starting fastening in marine and general hardware applications. Key Fea...
View full detailsPhillips Tapping Screws - Flat Head, #10 x 1/2"
Phillips tapping screws with a flat head design in #10 x 1/2" size—made from 18-8 stainless steel for reliable corrosion resistance in marine and o...
View full detailsPhillips Tapping Screws - Oval Head, #6 x 3/4"
Phillips tapping screws with an oval head in 18-8 stainless steel—ideal for quick, secure fastening where corrosion resistance matters. Key Feature...
View full detailsBlind Rivet, 3/16" x 3/8"
A marine-ready blind rivet for fastening jobs that require a secure connection on both sides of thin to medium materials—no access to the backside ...
View full detailsPhillips Tapping Screws - Oval Head, #6 x 5/8"
Phillips tapping screws with an oval head for secure fastening in marine and general hardware applications. Built from 18-8 stainless steel for cor...
View full detailsSeachoice 18-8 Stainless Steel Acorn Cap Nuts, 3/8-16 Size, Pack of 50
Seachoice 18-8 stainless steel acorn cap nuts give you a finished, rounded look while helping protect bolt threads—ideal when only a small amount o...
View full detailsSeachoice 18-8 Stainless Steel Acorn Cap Nuts, 5/16-18 Size, Pack of 50
Seachoice 18-8 stainless steel acorn cap nuts provide a clean, closed finish over the threaded end of a bolt—ideal for projects where only a small ...
View full detailsPhillips Tapping Screws - Oval Head, #14 x 2"
Secure applications with Phillips tapping screws featuring an oval head design in 18-8 stainless steel for dependable, corrosion-resistant fastenin...
View full detailsPhillips Tapping Screws - Flat Head, #8 x 3"
SeaChoice Phillips tapping screws with a flat head, #8 x 3" size—made from 18-8 stainless steel for corrosion-resistant fastening in marine and gen...
View full detailsPhillips Tapping Screws - Flat Head, #8 x 2-1/2"
Replace worn fasteners with Phillips tapping screws designed for secure, corrosion-resistant mounting in marine and general fastening applications....
View full detailsBlind Rivet, 3/16" x 1/2"
Secure marine-grade connections with this 3/16" x 1/2" blind rivet made from 18-8 stainless steel. Key Features Blind rivet for fast, one-sided in...
View full detailsPhillips Tapping Screws - Flat Head, #8 x 2"
Phillips tapping screws with a flat head for secure fastening. Built from 18-8 stainless steel for corrosion resistance in marine and outdoor envir...
View full detailsPhillips Tapping Screws - Oval Head, #14 x 1-1/4"
Keep mounting and sheet-metal assembly secure with Phillips tapping screws featuring an oval head and #14 x 1-1/4" size. Key Features Phillips dri...
View full detailsPhillips Tapping Screws - Flat Head, #8 x 1-1/2"
Phillips tapping screws with a flat head design in 18-8 stainless steel—ideal for marine and general mounting where corrosion resistance matters. K...
View full detailsPhillips Machine Screw - Oval Head, 1/4"-20 x 1-1/2"
Phillips machine screw with an oval head in 18-8 stainless steel for corrosion-resistant fastening. This size is 1/4"-20 x 1-1/2" (SKU: 50-00398). ...
View full detailsPhillips Machine Screw - Pan Head. 1/4"-20 x 4"
Replace and fasten with this Seachoice Phillips machine screw—pan head, 1/4"-20 x 4"—made from 18-8 stainless steel for corrosion resistance in mar...
View full detailsPhillips Machine Screw - Oval Head, 1/4"-20 x 1-1/4"
Reliable oval-head Phillips machine screw for fastening applications that benefit from a smooth, low-profile head. Key Features Phillips drive for...
View full detailsPhillips Tapping Screws - Flat Head, #8 x 1-3/4"
Secure panels and trim with these Phillips flat head tapping screws in #8 x 1-3/4" size, made from 18-8 stainless steel for strong holding power in...
View full detailsPhillips Machine Screw - Oval Head, 1/4"-20 x 1-3/4"
The Phillips Machine Screw with an oval head is built for secure, flush-looking fastening with coarse 1/4-20 thread and a 1-3/4" length in 18-8 sta...
View full detailsPhillips Tapping Screws - Oval Head, #14 x 1"
Phillips tapping screws with an oval head and Phillips drive, sized #14 x 1" for marine-style mounting and fastener replacement. Key Features Phil...
View full details