Stainless Steel Machine Screw Kit, 256-Piece | 8-32, 10-24 & 1/4-20 | Part 50-59428
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256-Piece Stainless Steel Machine Screw Kit — Part 50-59428
A focused machine screw assortment covering the three most common SAE thread sizes used in marine hardware. This 256-piece kit includes pan head and oval head machine screws in 8-32, 10-24, and 1/4-20 threads, paired with matching hex nuts, locknuts, and flat washers — all in stainless steel for lasting corrosion resistance in salt and fresh water.
Unlike combo kits that mix machine screws with self-tapping screws, this kit is dedicated to machine screw applications where a threaded hole, insert, or nut is required for a proper mechanical connection.
Parts Desk Insights
Best Use Case: The right choice when you need machine screws specifically — for mounting electronics, instruments, helm hardware, and panel components that use threaded standoffs, inserts, or backing nuts. The 8-32, 10-24, and 1/4-20 sizes cover the vast majority of marine electronics and hardware mounting applications. The slim, flat case stores easily in a toolbox or service bag. For a broader kit that also includes self-tapping screws, see the 750-Piece SAE Kit (50-59433) or the 1,008-Piece SAE Kit (50-59436). For metric machine screws, see the 240-Piece Metric Kit (50-59431).
What’s Included
- 8-32 pan head and oval head machine screws — various lengths
- 10-24 pan head and oval head machine screws — various lengths
- 1/4-20 pan head and oval head machine screws — various lengths
- Hex nuts and locknuts to fit all included screws
- #8, #10, and 1/4" flat washers
- 256 pieces total
- Durable, compartmented, re-closable clear plastic storage case (4½" W × 9" L × 1¼" H)
Specifications
- Material: Stainless steel
- Thread Standard: SAE (8-32, 10-24, 1/4-20)
- Part Number: 50-59428
- Piece Count: 256
Related Marine Fastener Kits
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.