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PartsTable / COMPONENT / 28755 ITEM 7
28755 ITEM 7 ✓ 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 28755 ITEM 7 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 5315-01-143-2730, 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
28755 ITEM 7
NSN: 5315-01-143-2730
FSC: 5315
CAGE: 81400 — HASKEL INTERNATIONAL, LLC DBA HASKEL INTERNATIONAL, LLC (USA)
SPECIFICATIONS
Part Number28755 ITEM 7
NSN5315-01-143-2730
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 28755 ITEM 7 · 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 8
21748Interchangeable
interchangeable cross-reference
interchangeable
441-1179-005Interchangeable
interchangeable cross-reference
interchangeable
1-0001-0029-42Interchangeable
interchangeable cross-reference
interchangeable
B97565Interchangeable
interchangeable cross-reference
interchangeable
L-4038Interchangeable
interchangeable cross-reference
interchangeable
4038Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 28755 ITEM 7?
28755 ITEM 7 is a 28755 ITEM 7.
What parts can replace 28755 ITEM 7?
There are 8 known substitutes for 28755 ITEM 7: 21748, 441-1179-005, 1-0001-0029-42 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 28755 ITEM 7?
28755 ITEM 7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-143-2730. 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