ST3M787-5 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

ST3M787-5: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: HEXAGON, lubrication: DRY FILM LUBRICANT, temp_rating: 450.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-148-3703, 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

ST3M787-5

NSN: 5310-01-148-3703
FSC: 5310 — Nuts and Washers
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL
nut_style	HEXAGON
lubrication	DRY FILM LUBRICANT
temp_rating	450.0 FAHRENHEIT MAXIMUM DEGF
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.313 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
locking_feature	PREVAILING TORQUE ALL METAL DESIGN
thread_direction	RIGHT-HAND
washer_thickness	0.055 INCHES NOMINAL IN
surface_treatment	PASSIVATE OVERALL
width_across_flats	0.367 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN
NSN	5310-01-148-3703

COMPONENT DIAGRAM

KEY FEATURES

•

LUBRICATION: DRY FILM LUBRICANT

•

WASHER OUTSIDE DIAMETER: 0.520 INCHES MAXIMUM IN

•

WIDTH ACROSS FLATS: 0.367 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN

•

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

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

TEMP RATING: 450.0 FAHRENHEIT MAXIMUM DEGF

•

WASHER THICKNESS: 0.055 INCHES NOMINAL IN

TECHNICAL CHARACTERISTICS

LUBRICATION	DRY FILM LUBRICANT
OVERALL HEIGHT	0.313 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	0.520 INCHES MAXIMUM IN
WIDTH ACROSS FLATS	0.367 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING	450.0 FAHRENHEIT MAXIMUM DEGF
WASHER THICKNESS	0.055 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND

SUBSTITUTES & CROSS-REFERENCES 6

10109821Reference document

Same NSN cross-reference

Reference document — Informative reference only

754/7/36525/000Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

BH787-5Reference document

Same NSN cross-reference

Reference document — Secondary reference

E12695-5Reference document

Same NSN cross-reference

Reference document — Secondary reference

DSR04605-1003Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

79317CM-524Reference document

Same NSN cross-reference

Reference document — Secondary reference

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 ST3M787-5?

ST3M787-5 is a NUT,SELF-LOCKING,EXTENDED WASHER.

What parts can replace ST3M787-5?

There are 6 known substitutes for ST3M787-5: 10109821, 754/7/36525/000, BH787-5 and 3 more. Substitute compatibility should be verified for your specific system.

What is the NSN for ST3M787-5?

ST3M787-5 is cataloged in the U.S. Government catalog under NSN 5310-01-148-3703. This indicates validated use in U.S. government and defense supply chains.

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