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PartsTable / COMPONENT / SKB-429 ITEM 40
SKB-429 ITEM 40 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,LOCK is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-405-9949, 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
SKB-429 ITEM 40
NSN: 5310-01-405-9949
FSC: 5310
CAGE: 0APJ5 — COFFIN TURBO PUMP INC (USA)
SPECIFICATIONS
Part NumberSKB-429 ITEM 40
NSN5310-01-405-9949
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SKB-429 ITEM 40 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
3317Interchangeable
interchangeable cross-reference
interchangeable
317Interchangeable
interchangeable cross-reference
interchangeable
S1449768Interchangeable
interchangeable cross-reference
interchangeable
111X08503X0000Interchangeable
interchangeable cross-reference
interchangeable
52164DAXInterchangeable
interchangeable cross-reference
interchangeable
700381Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SKB-429 ITEM 40?
SKB-429 ITEM 40 is a WASHER,LOCK.
What parts can replace SKB-429 ITEM 40?
There are 7 known substitutes for SKB-429 ITEM 40: 3317, 317, S1449768 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SKB-429 ITEM 40?
SKB-429 ITEM 40 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-405-9949. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026