91221-1K — NUT,PLAIN,EXTENDED WASHER,HEXAGO

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

91221-1K: NUT,PLAIN,EXTENDED WASHER,HEXAGO.

NUT,PLAIN,EXTENDED WASHER,HEXAGO. Key specifications include nut_style: HEXAGON, thread_class: 2B, thread_direction: RIGHT-HAND, surface_treatment: PHOSPHATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-157-7405, 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

91221-1K

NSN: 5310-01-157-7405
FSC: 5310 — Nuts and Washers
CAGE: 60703 — TRICO PRODUCTS CORPORATION (USA)

SPECIFICATIONS

nut_style	HEXAGON
thread_class	2B
thread_direction	RIGHT-HAND
surface_treatment	PHOSPHATE OVERALL
NSN	5310-01-157-7405

COMPONENT DIAGRAM

KEY FEATURES

•

THREAD DIRECTION: RIGHT-HAND

•

SURFACE TREATMENT: PHOSPHATE OVERALL

•

NUT STYLE: HEXAGON

•

THREAD CLASS: 2B

TECHNICAL CHARACTERISTICS

THREAD DIRECTION	RIGHT-HAND
SURFACE TREATMENT	PHOSPHATE OVERALL
NUT STYLE	HEXAGON
THREAD CLASS	2B

OTHER ITEMS IN FSC 5310 — Nuts and Washers

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540

SUBSTITUTES & CROSS-REFERENCES 2

5731530Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

7623-912211KSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

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 91221-1K?

91221-1K is a NUT,PLAIN,EXTENDED WASHER,HEXAGO.

What parts can replace 91221-1K?

There are 2 known substitutes for 91221-1K: 5731530, 7623-912211K. Substitute compatibility should be verified for your specific system.

What is the NSN for 91221-1K?

91221-1K is cataloged in the U.S. Government catalog under NSN 5310-01-157-7405. This indicates validated use in U.S. government and defense supply chains.

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91221-1K — NUT,PLAIN,EXTENDED WASHER,HEXAGO

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