9131M74P28 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

9131M74P28: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: CASTELLATED HEXAGON, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.297 INCHES MINIMUM AND 0.329 INCHES MAXIMUM IN, hardness_rating: 29.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-287-7545, 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

9131M74P28

NSN: 5310-01-287-7545
FSC: 5310 — Nuts and Washers
CAGE: 07482 — GENERAL ELECTRIC COMPANY (USA)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL
nut_style	CASTELLATED HEXAGON
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.297 INCHES MINIMUM AND 0.329 INCHES MAXIMUM IN
hardness_rating	29.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
thread_direction	RIGHT-HAND
washer_thickness	0.055 INCHES NOMINAL IN
width_across_flats	0.743 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN
nominal_thread_size	0.625 INCHES IN
end_item_identification	W/S: ENGINE, AIRCRAFT F110-GE-400; ENGINE, AIRCRAFT, F-108 (CFM-56, KC-135A); AIRCRAFT, F-16 A
NSN	5310-01-287-7545

COMPONENT DIAGRAM

KEY FEATURES

•

WASHER OUTSIDE DIAMETER: 0.910 INCHES MAXIMUM IN

•

WIDTH ACROSS FLATS: 0.743 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

HARDNESS RATING: 29.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM

•

WASHER THICKNESS: 0.055 INCHES NOMINAL IN

•

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

•

THREAD DIRECTION: RIGHT-HAND

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	0.297 INCHES MINIMUM AND 0.329 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	0.910 INCHES MAXIMUM IN
WIDTH ACROSS FLATS	0.743 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
HARDNESS RATING	29.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM
WASHER THICKNESS	0.055 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.625 INCHES IN
LOCKING FEATURE	PREVAILING TORQUE ALL METAL DESIGN

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

No substitute or cross-reference records for this part.

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 9131M74P28?

9131M74P28 is a NUT,SELF-LOCKING,EXTENDED WASHER.

What is the NSN for 9131M74P28?

9131M74P28 is cataloged in the U.S. Government catalog under NSN 5310-01-287-7545. This indicates validated use in U.S. government and defense supply chains.

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9131M74P28 — NUT,SELF-LOCKING,EXTENDED WASHER

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