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90921 — WASHER,FLAT

✓ Government record, cited
Disguise · NUT WASHER
PRODUCT OVERVIEW

90921: WASHER,FLAT.

The WASHER,FLAT is a Disguise industrial component. Key specifications include end_item_identification: 1005-01-553-5196 M39 ENHANCED MARKSMAN RIFLE, part_name_assigned_by_controlling_agency: PISTOL GRIP MOUNTING SCREW FLAT WASHER. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-219-3670, 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
90921
NSN: 5315-01-219-3670
NIINs: 012193670, 015567123
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 62983 — EATON AEROSPACE, LLC DBA JACKSON SOUTH (USA)
SPECIFICATIONS
end_item_identification1005-01-553-5196 M39 ENHANCED MARKSMAN RIFLE
part_name_assigned_by_controlling_agencyPISTOL GRIP MOUNTING SCREW FLAT WASHER
NSN5315-01-219-3670
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90921 · Disguise ⚠ 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 1
820837 PIECE 27Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 90921?
90921 is a WASHER,FLAT manufactured by Disguise.
What parts can replace 90921?
There is 1 known substitute for 90921: 820837 PIECE 27. Substitute compatibility should be verified for your specific system.
What is the NSN for 90921?
90921 is cataloged in the U.S. Government catalog under NSN 5315-01-219-3670. This indicates validated use in U.S. government and defense supply chains.
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