Z7637-8 — NUT,SELF-LOCKING,CASTELLATED,HEX

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

Z7637-8: NUT,SELF-LOCKING,CASTELLATED,HEX.

NUT,SELF-LOCKING,CASTELLATED,HEX. Key specifications include material: STEEL OVERALL, nut_style: CASTELLATED, HEXAGON, nut_height: 0.316 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN, temp_rating: 450.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNF. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-976-1816, 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

Z7637-8

NSN: 5310-00-976-1816
FSC: 5310 — Nuts and Washers
CAGE: 72962 — HARVARD INDUSTRIES INC (USA)

SPECIFICATIONS

material	STEEL OVERALL
nut_style	CASTELLATED, HEXAGON
nut_height	0.316 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
temp_rating	450.0 FAHRENHEIT NOMINAL DEGF
thread_class	3B
thread_series	UNF
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
thread_direction	RIGHT-HAND
surface_treatment	CADMIUM OVERALL
width_across_flats	0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
nominal_thread_size	0.500 INCHES IN
bearing_surface_type	CHAMFERED
NSN	5310-00-976-1816

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD SERIES: UNF

•

TEMP RATING: 450.0 FAHRENHEIT NOMINAL DEGF

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.500 INCHES IN

•

LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN

•

NUT HEIGHT: 0.316 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES	UNF
TEMP RATING	450.0 FAHRENHEIT NOMINAL DEGF
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.500 INCHES IN
LOCKING FEATURE	PREVAILING TORQUE ALL METAL DESIGN
NUT HEIGHT	0.316 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
SURFACE TREATMENT	CADMIUM OVERALL
NUT STYLE	CASTELLATED, HEXAGON

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 1

C330-820-23Reference document

Same NSN cross-reference

Reference document — Vendor item drawing 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 Z7637-8?

Z7637-8 is a NUT,SELF-LOCKING,CASTELLATED,HEX.

What parts can replace Z7637-8?

There is 1 known substitute for Z7637-8: C330-820-23. Substitute compatibility should be verified for your specific system.

What is the NSN for Z7637-8?

Z7637-8 is cataloged in the U.S. Government catalog under NSN 5310-00-976-1816. This indicates validated use in U.S. government and defense supply chains.

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Z7637-8 — NUT,SELF-LOCKING,CASTELLATED,HEX

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