MK7231-04 — NUT,SELF-LOCKING,CLINCH

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

MK7231-04: NUT,SELF-LOCKING,CLINCH.

The NUT,SELF-LOCKING,CLINCH is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: CLINCH, nut_height: 0.195 INCHES NOMINAL IN, temp_rating: 900.0 FAHRENHEIT NOMINAL DEGF, nut_diameter: 0.219 INCHES MAXIMUM IN, pilot_length: 0.035 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-016-0777, 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

MK7231-04

NSN: 5310-00-016-0777
FSC: 5310 — Nuts and Washers
CAGE: 15653 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL
nut_style	CLINCH
nut_height	0.195 INCHES NOMINAL IN
temp_rating	900.0 FAHRENHEIT NOMINAL DEGF
nut_diameter	0.219 INCHES MAXIMUM IN
pilot_length	0.035 INCHES MAXIMUM IN
thread_class	3B
thread_series	UNJC
pilot_diameter	0.155 INCHES MAXIMUM IN
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
special_features	UPPER THREADED PORTION DEFORMED ELLIPITICALLY TO PRODUCE SELF LOCKING ACTION ALSO OPTIONAL SIX OR TEN LANDS FOR TIGHTENING
thread_direction	RIGHT-HAND
NSN	5310-00-016-0777

COMPONENT DIAGRAM

KEY FEATURES

•

THREAD SERIES: UNJC

•

PRECIOUS MATERIAL: SILVER

•

TEMP RATING: 900.0 FAHRENHEIT NOMINAL DEGF

•

NUT COUNTERBORE DEPTH: 0.035 INCHES MINIMUM NUT IN

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.112 INCHES IN

•

NUT DIAMETER: 0.219 INCHES MAXIMUM IN

•

COUNTERBORE DIAMETER: 0.112 INCHES MINIMUM NUT IN

TECHNICAL CHARACTERISTICS

THREAD SERIES	UNJC
PRECIOUS MATERIAL	SILVER
TEMP RATING	900.0 FAHRENHEIT NOMINAL DEGF
NUT COUNTERBORE DEPTH	0.035 INCHES MINIMUM NUT IN
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.112 INCHES IN
NUT DIAMETER	0.219 INCHES MAXIMUM IN
COUNTERBORE DIAMETER	0.112 INCHES MINIMUM NUT IN
PILOT DIAMETER	0.155 INCHES MAXIMUM IN
PILOT LENGTH	0.035 INCHES MAXIMUM 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 4

LHC4526-40Reference document

Same NSN cross-reference

Reference document — Secondary reference

LHC4256-40Reference document

Same NSN cross-reference

Reference document — Secondary reference

419440-2Reference document

Same NSN cross-reference

Reference document — Vendor item drawing reference

419449-2Reference document

Same NSN cross-reference

Reference document — Secondary 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 MK7231-04?

MK7231-04 is a NUT,SELF-LOCKING,CLINCH.

What parts can replace MK7231-04?

There are 4 known substitutes for MK7231-04: LHC4526-40, LHC4256-40, 419440-2 and 1 more. Substitute compatibility should be verified for your specific system.

What is the NSN for MK7231-04?

MK7231-04 is cataloged in the U.S. Government catalog under NSN 5310-00-016-0777. This indicates validated use in U.S. government and defense supply chains.

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