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SM-B-620778 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

SM-B-620778: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5310-00-187-0156, 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
SM-B-620778
NSN: 5310-00-187-0156
FSC: 5310 — Nuts and Washers
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
Part NumberSM-B-620778
NSN5310-00-187-0156
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SM-B-620778 · 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 8
02141103Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1210-06-00Reference document
Same NSN cross-reference
Reference document — Secondary reference
1210-06-00-0541Reference document
Same NSN cross-reference
Reference document — Secondary reference
1210-06Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
P49898Reference document
Same NSN cross-reference
Reference document — Secondary reference
1000449Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SM-B-620778?
SM-B-620778 is a WASHER,LOCK.
What parts can replace SM-B-620778?
There are 8 known substitutes for SM-B-620778: 02141103, 1210-06-00, 1210-06-00-0541 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SM-B-620778?
SM-B-620778 is cataloged in the U.S. Government catalog under NSN 5310-00-187-0156. This indicates validated use in U.S. government and defense supply chains.
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