H49661-8 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

H49661-8: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL, lubrication: DRY FILM LUBRICANT, temp_rating: 450.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-196-3253, 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

H49661-8

NSN: 5310-01-196-3253
FSC: 5310 — Nuts and Washers
CAGE: 15653 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL
lubrication	DRY FILM LUBRICANT
temp_rating	450.0 FAHRENHEIT MAXIMUM DEGF
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
thread_direction	RIGHT-HAND
countersink_angle	120.0 DEGREES NOMINAL WASHER
surface_treatment	PASSIVATE OVERALL
width_across_flats	0.553 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
nominal_thread_size	0.500 INCHES IN
NSN	5310-01-196-3253

COMPONENT DIAGRAM

KEY FEATURES

•

LUBRICATION: DRY FILM LUBRICANT

•

WASHER OUTSIDE DIAMETER: 0.825 INCHES MINIMUM AND 0.835 INCHES MAXIMUM IN

•

WIDTH ACROSS FLATS: 0.553 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

TEMP RATING: 450.0 FAHRENHEIT MAXIMUM DEGF

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

TECHNICAL CHARACTERISTICS

LUBRICATION	DRY FILM LUBRICANT
OVERALL HEIGHT	0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	0.825 INCHES MINIMUM AND 0.835 INCHES MAXIMUM IN
WIDTH ACROSS FLATS	0.553 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING	450.0 FAHRENHEIT MAXIMUM DEGF
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.500 INCHES 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 3

TLN1023CD3-8NSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

10110132Reference document

Same NSN cross-reference

Reference document — Informative reference only

ST3M468C8MReference document

Same NSN cross-reference

Reference document — Vendor item drawing reference

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 H49661-8?

H49661-8 is a NUT,SELF-LOCKING,EXTENDED WASHER.

What parts can replace H49661-8?

There are 3 known substitutes for H49661-8: TLN1023CD3-8N, 10110132, ST3M468C8M. Substitute compatibility should be verified for your specific system.

What is the NSN for H49661-8?

H49661-8 is cataloged in the U.S. Government catalog under NSN 5310-01-196-3253. This indicates validated use in U.S. government and defense supply chains.

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H49661-8 — NUT,SELF-LOCKING,EXTENDED WASHER

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