KFN542-08 — NUT,SELF-LOCKING,ASSEMBLED WASHE

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

KFN542-08: NUT,SELF-LOCKING,ASSEMBLED WASHE.

NUT,SELF-LOCKING,ASSEMBLED WASHE. Key specifications include material: STEEL COMP 8740 OR STEEL COMP 4340 OR STEEL COMP 4140 OVERALL, nut_style: FLAT WITH TURNED UP EDGE, temp_rating: 450.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B, thread_series: UNJC, overall_height: 0.240 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-119-6793, 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

KFN542-08

NSN: 5310-01-119-6793
FSC: 5310 — Nuts and Washers
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)

SPECIFICATIONS

material	STEEL COMP 8740 OR STEEL COMP 4340 OR STEEL COMP 4140 OVERALL
nut_style	FLAT WITH TURNED UP EDGE
temp_rating	450.0 FAHRENHEIT MAXIMUM DEGF
thread_class	3B
thread_series	UNJC
overall_height	0.240 INCHES MAXIMUM IN
hardness_rating	39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
special_features	WASHER ROCKWELL C SCALE 40.0 MIN AND ROCKWELL C SCALE 45.0 MAX
thread_direction	RIGHT-HAND
surface_treatment	CADMIUM AND CHROMATE OVERALL
width_across_flats	0.212 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN
NSN	5310-01-119-6793

COMPONENT DIAGRAM

KEY FEATURES

•

WASHER OUTSIDE DIAMETER: 0.340 INCHES MAXIMUM IN

•

WIDTH ACROSS FLATS: 0.212 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY2 CL2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD SERIES: UNJC

•

TEMP RATING: 450.0 FAHRENHEIT MAXIMUM DEGF

•

HARDNESS RATING: 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM

•

MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 3RD MATERIAL RESPONSE OVERALL

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	0.240 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	0.340 INCHES MAXIMUM IN
WIDTH ACROSS FLATS	0.212 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TY2 CL2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES	UNJC
TEMP RATING	450.0 FAHRENHEIT MAXIMUM DEGF
HARDNESS RATING	39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 3RD MATERIAL RESPONSE OVERALL
NUT COUNTERBORE DEPTH	0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM NUT IN
THREAD DIRECTION	RIGHT-HAND

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

GHN10009-3Reference 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 KFN542-08?

KFN542-08 is a NUT,SELF-LOCKING,ASSEMBLED WASHE.

What parts can replace KFN542-08?

There is 1 known substitute for KFN542-08: GHN10009-3. Substitute compatibility should be verified for your specific system.

What is the NSN for KFN542-08?

KFN542-08 is cataloged in the U.S. Government catalog under NSN 5310-01-119-6793. This indicates validated use in U.S. government and defense supply chains.

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KFN542-08 — NUT,SELF-LOCKING,ASSEMBLED WASHE

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