73781CM-1414 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

73781CM-1414: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: CASTELLATED HEXAGON, lubrication: DRY FILM LUBRICANT, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.906 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-348-8513, 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

73781CM-1414

NSN: 5310-01-348-8513
FSC: 5310 — Nuts and Washers
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL
nut_style	CASTELLATED HEXAGON
lubrication	DRY FILM LUBRICANT
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.906 INCHES NOMINAL IN
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
thread_direction	RIGHT-HAND
washer_thickness	0.120 INCHES NOMINAL IN
surface_treatment	PASSIVATE NUT
width_across_flats	0.990 INCHES MINIMUM AND 1.006 INCHES MAXIMUM IN
nominal_thread_size	0.875 INCHES IN
NSN	5310-01-348-8513

COMPONENT DIAGRAM

KEY FEATURES

•

LUBRICATION: DRY FILM LUBRICANT

•

WASHER OUTSIDE DIAMETER: 1.300 INCHES MINIMUM IN

•

WIDTH ACROSS FLATS: 0.990 INCHES MINIMUM AND 1.006 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE NUT

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

WASHER THICKNESS: 0.120 INCHES NOMINAL IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

TECHNICAL CHARACTERISTICS

LUBRICATION	DRY FILM LUBRICANT
OVERALL HEIGHT	0.906 INCHES NOMINAL IN
WASHER OUTSIDE DIAMETER	1.300 INCHES MINIMUM IN
WIDTH ACROSS FLATS	0.990 INCHES MINIMUM AND 1.006 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE NUT
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
WASHER THICKNESS	0.120 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.875 INCHES 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 2

SME9925-14Reference document

Same NSN cross-reference

Reference document — Secondary reference

03A186-14LSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 73781CM-1414?

73781CM-1414 is a NUT,SELF-LOCKING,EXTENDED WASHER.

What parts can replace 73781CM-1414?

There are 2 known substitutes for 73781CM-1414: SME9925-14, 03A186-14L. Substitute compatibility should be verified for your specific system.

What is the NSN for 73781CM-1414?

73781CM-1414 is cataloged in the U.S. Government catalog under NSN 5310-01-348-8513. This indicates validated use in U.S. government and defense supply chains.

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73781CM-1414 — NUT,SELF-LOCKING,EXTENDED WASHER

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