218021101 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

218021101: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1137 OVERALL EXCEPT INSERT, nut_style: HEXAGON, nut_height: 1.010 INCHES MINIMUM AND 1.141 INCHES MAXIMUM IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-418-5957, 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

218021101

NSN: 5310-01-418-5957
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)

SPECIFICATIONS

material	STEEL COMP 1137 OVERALL EXCEPT INSERT
nut_style	HEXAGON
nut_height	1.010 INCHES MINIMUM AND 1.141 INCHES MAXIMUM IN
temp_rating	250.0 FAHRENHEIT NOMINAL DEGF
thread_class	3B
thread_series	UNIFIED NATIONAL COARSE (UNC)
locking_feature	PREVAILING TORQUE WITH NONMETALLIC INSERT
thread_direction	RIGHT-HAND
countersink_angle	88.0 DEGREES NOMINAL FIRST END
surface_treatment	ZINC OVERALL EXCEPT INSERT
width_across_flats	1.427 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN
nominal_thread_size	1.000 INCHES IN
NSN	5310-01-418-5957

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 1.427 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT

•

THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)

•

TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 1.000 INCHES IN

•

LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT

•

NUT HEIGHT: 1.010 INCHES MINIMUM AND 1.141 INCHES MAXIMUM IN

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	1.427 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT
THREAD SERIES	UNIFIED NATIONAL COARSE (UNC)
TEMP RATING	250.0 FAHRENHEIT NOMINAL DEGF
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	1.000 INCHES IN
LOCKING FEATURE	PREVAILING TORQUE WITH NONMETALLIC INSERT
NUT HEIGHT	1.010 INCHES MINIMUM AND 1.141 INCHES MAXIMUM IN
SURFACE TREATMENT	ZINC OVERALL EXCEPT INSERT
COUNTERSINK ANGLE	88.0 DEGREES NOMINAL FIRST END

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

556-7070224-7Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

H793-2500-7Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

MS17829Z16CReference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 218021101?

218021101 is a NUT,SELF-LOCKING,HEXAGON.

What parts can replace 218021101?

There are 3 known substitutes for 218021101: 556-7070224-7, H793-2500-7, MS17829Z16C. Substitute compatibility should be verified for your specific system.

What is the NSN for 218021101?

218021101 is cataloged in the U.S. Government catalog under NSN 5310-01-418-5957. This indicates validated use in U.S. government and defense supply chains.

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218021101 — NUT,SELF-LOCKING,HEXAGON

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