57A5A186-3 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

57A5A186-3: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2011 OVERALL, nut_style: HEXAGON, nut_height: 0.100 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5310-00-685-7787, 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

57A5A186-3

NSN: 5310-00-685-7787
FSC: 5310 — Nuts and Washers
CAGE: 02387 — NAVAL AIR WARFARE CENTER AIRCRAFT DIV (USA)

SPECIFICATIONS

material	ALUMINUM ALLOY 2011 OVERALL
nut_style	HEXAGON
nut_height	0.100 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
temp_rating	250.0 FAHRENHEIT NOMINAL DEGF
thread_class	3B
thread_series	UNIFIED NATIONAL COARSE (UNC)
locking_feature	PREVAILING TORQUE WITH NONMETALLIC INSERT
thread_direction	RIGHT-HAND
surface_treatment	OXIDE FILM NUT
width_across_flats	0.183 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
nominal_thread_size	0.099 INCHES IN
bearing_surface_type	CHAMFERED OR WASHER FACED
NSN	5310-00-685-7787

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.183 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE NUT

•

THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)

•

TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF

•

MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/3 T3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.099 INCHES IN

•

LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.183 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE NUT
THREAD SERIES	UNIFIED NATIONAL COARSE (UNC)
TEMP RATING	250.0 FAHRENHEIT NOMINAL DEGF
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-225/3 T3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.099 INCHES IN
LOCKING FEATURE	PREVAILING TORQUE WITH NONMETALLIC INSERT
NUT HEIGHT	0.100 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
SURFACE TREATMENT	OXIDE FILM NUT

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

68-1660-38Reference document

Same NSN cross-reference

Reference document — Secondary reference

146-3AANSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 57A5A186-3?

57A5A186-3 is a NUT,SELF-LOCKING,HEXAGON.

What parts can replace 57A5A186-3?

There are 2 known substitutes for 57A5A186-3: 68-1660-38, 146-3AAN. Substitute compatibility should be verified for your specific system.

What is the NSN for 57A5A186-3?

57A5A186-3 is cataloged in the U.S. Government catalog under NSN 5310-00-685-7787. This indicates validated use in U.S. government and defense supply chains.

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