// INDUSTRIAL FASTENER SUPPLY · BOX QUANTITIES

Find the exact fastener.
Buy it by the box.

Pick a type and thread size. We take you straight to the matching size collection.

457002-33001/4"-20 x 1/2" HCS · GR 5 · ZINC
1024CSP-100#10-24 x 1-1/2" SHCS · ALLOY · BLK OX
100NF5-1001"-8 HEX NUT · GR 5 · ZINC
50WSAE-251/2" SAE FLAT WASHER · ZINC
50AES-251/2" SINGLE EXP. ANCHOR · ZINC ALLOY
Free shipping on orders $200+on every order over $200
Exact-spec sizesBulk-box pricing on everyday hardware
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(949) 415-0005Mon–Fri 7AM–5PM PT

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Bolts23,425 parts
Hex · carriage · structural · lag
Screws25,001 parts
Machine · self-tapping · set
Nuts5,312 parts
Hex · lock · flange · weld
Washers2,975 parts
Flat · lock · fender · SAE
Anchors726 parts
Wedge · sleeve · drop-in
Pins, Rings & Clips4,860 parts
Dowel · cotter · spring · retaining
Rivets1,006 parts
Blind · structural · drive-pin
Socket Products17,015 parts
SHCS · button · flat · set
Weld Fasteners260 parts
Weld nuts · CD studs
Standoffs & Spacers1,787 parts
Hex · round · self-clinching
Rod & Studs642 parts
All-thread · B7 studs
Tools & Accessories455 parts
Bits · hand tools · clamps

Shop by grade & class

Grade chart →
Grade 2No head marks

74 ksi min. tensile · SAE J429 · ¼–¾"*

Light-duty, non-critical joints: brackets, shelving, general assembly.

1,068 partsShop →
Grade 53 radial lines

120 ksi min. tensile · SAE J429 · ¼–1"*

The everyday machinery bolt: frames, equipment, automotive.

5,697 partsShop →
Grade 86 radial lines

150 ksi min. tensile · SAE J429 · ¼–1½"*

High-load, high-vibration joints: suspension, heavy equipment.

3,954 partsShop →
18-8 Stainless304 family

≈18% Cr · 8% Ni

Corrosion resistance for outdoor, wet and food-adjacent equipment.

15,907 partsShop →
Class 8.8Metric · marked 8.8

Property class marked on head

The metric counterpart for general machinery and assemblies.

3,332 partsShop →
Class 10.9Metric · marked 10.9

Property class marked on head

Higher-strength metric bolting for heavy-duty, high-stress joints.

2,944 partsShop →

* Tensile lines on Grade 2 / 5 / 8 confirmed by Spock 2026-10-01. No strength figures shown for 18-8, 8.8 or 10.9.

Common thread sizes · hex cap screws

Thread pitch reference →
INCH UNC
1/4"-20643 parts5/16"-18638 parts3/8"-16837 parts1/2"-13856 parts
METRIC
M6332 partsM8408 partsM10502 partsM12504 parts

// FOR MANUFACTURERS & ASSEMBLERS

Built for production buying, not one-off bags.

Net 30 terms

Net 30 for approved business accounts. Buy on PO, pay on invoice.

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DROP FILE · OR BROWSE PROPOSED
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Reorder & Quick Order

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3716CH5O-900× 237NF5-2000× 1
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Sales team

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sales@ecomfasteners.com(949) 415-0005