7685-65990 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

7685-65990: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: DOUBLE HEXAGON, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.650 INCHES MAXIMUM IN, special_features: INCLUDES RETAINER 1.800 IN. DIA MARKED /REMOVE BEFORE LAUNCH/ IN.

This part is cataloged in the U.S. Government catalog under NSN 5310-01-208-7986, 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

7685-65990

NSN: 5310-01-208-7986
FSC: 5310 — Nuts and Washers
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL
nut_style	DOUBLE HEXAGON
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.650 INCHES MAXIMUM IN
special_features	INCLUDES RETAINER 1.800 IN. DIA MARKED /REMOVE BEFORE LAUNCH/ IN
thread_direction	RIGHT-HAND
precious_material	SILVER
surface_treatment	SILVER THREADS
nominal_thread_size	0.625 INCHES IN
washer_outside_diameter	1.050 INCHES MAXIMUM IN
thread_quantity_per_inch	18
NSN	5310-01-208-7986

COMPONENT DIAGRAM

KEY FEATURES

•

WASHER OUTSIDE DIAMETER: 1.050 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE THREADS

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

PRECIOUS MATERIAL: SILVER

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

THREAD DIRECTION: RIGHT-HAND

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	0.650 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	1.050 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT THREADS
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
PRECIOUS MATERIAL	SILVER
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.625 INCHES IN
SPECIAL FEATURES	INCLUDES RETAINER 1.800 IN. DIA MARKED /REMOVE BEFORE LAUNCH/ IN

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

7685-65990-002Reference document

Same NSN cross-reference

Reference document — Secondary reference

NS202560-108Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 7685-65990?

7685-65990 is a NUT,SELF-LOCKING,EXTENDED WASHER.

What parts can replace 7685-65990?

There are 2 known substitutes for 7685-65990: 7685-65990-002, NS202560-108. Substitute compatibility should be verified for your specific system.

What is the NSN for 7685-65990?

7685-65990 is cataloged in the U.S. Government catalog under NSN 5310-01-208-7986. This indicates validated use in U.S. government and defense supply chains.

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7685-65990 — NUT,SELF-LOCKING,EXTENDED WASHER

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