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1B8721 — KEY,WOODRUFF

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1B8721: KEY,WOODRUFF.

The KEY,WOODRUFF is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5315-00-616-5510, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
1B8721
NSN: 5315-00-616-5510
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
Part Number1B8721
NSN5315-00-616-5510
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1B8721 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 5
85023Reference document
Same NSN cross-reference
Reference document — Secondary reference
117984Reference document
Same NSN cross-reference
Reference document — Secondary reference
S22X22Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS35756-26Reference document
Same NSN cross-reference
Reference document — Secondary reference
23-1 3-8INX5-16Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1B8721?
1B8721 is a KEY,WOODRUFF.
What parts can replace 1B8721?
There are 5 known substitutes for 1B8721: 85023, 117984, S22X22 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1B8721?
1B8721 is cataloged in the U.S. Government catalog under NSN 5315-00-616-5510. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.