ST2594-10 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

ST2594-10: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: NICKEL ALLOY UNS N07001 OVERALL, nut_style: DOUBLE HEXAGON, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.308 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN, hardness_rating: 34.0 ROCKWELL C MINIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-320-7364, 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

ST2594-10

NSN: 5310-01-320-7364
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)

SPECIFICATIONS

material	NICKEL ALLOY UNS N07001 OVERALL
nut_style	DOUBLE HEXAGON
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.308 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
hardness_rating	34.0 ROCKWELL C MINIMUM
locking_feature	PREVAILING TORQUE WITH METALLIC INSERT
thread_direction	RIGHT-HAND
washer_thickness	0.045 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
precious_material	SILVER
surface_treatment	SILVER THREADS
width_across_flats	0.312 INCHES NOMINAL IN
NSN	5310-01-320-7364

COMPONENT DIAGRAM

KEY FEATURES

•

WASHER OUTSIDE DIAMETER: 0.410 INCHES MINIMUM IN

•

WIDTH ACROSS FLATS: 0.312 INCHES NOMINAL IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2411 ASSN STD SINGLE TREATMENT RESPONSE THREADS

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

PRECIOUS MATERIAL: SILVER

•

HARDNESS RATING: 34.0 ROCKWELL C MINIMUM

•

WASHER THICKNESS: 0.045 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	0.308 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	0.410 INCHES MINIMUM IN
WIDTH ACROSS FLATS	0.312 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS 2411 ASSN STD SINGLE TREATMENT RESPONSE THREADS
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
PRECIOUS MATERIAL	SILVER
HARDNESS RATING	34.0 ROCKWELL C MINIMUM
WASHER THICKNESS	0.045 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5709 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND

SUBSTITUTES & CROSS-REFERENCES 7

ST2595-10Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

ST2593-10Reference document

Same NSN cross-reference

Reference document — Secondary reference

ST2591-10Reference document

Same NSN cross-reference

Reference document — Secondary reference

H53831-4Reference document

Same NSN cross-reference

Reference document — Secondary reference

4075146Reference document

Same NSN cross-reference

Reference document — Secondary reference

5310PL0754330Reference document

Same NSN cross-reference

Reference document — Informative reference only

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is ST2594-10?

ST2594-10 is a NUT,SELF-LOCKING,EXTENDED WASHER.

What parts can replace ST2594-10?

There are 7 known substitutes for ST2594-10: ST2595-10, ST2593-10, ST2591-10 and 4 more. Substitute compatibility should be verified for your specific system.

What is the NSN for ST2594-10?

ST2594-10 is cataloged in the U.S. Government catalog under NSN 5310-01-320-7364. This indicates validated use in U.S. government and defense supply chains.

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ST2594-10 — NUT,SELF-LOCKING,EXTENDED WASHER

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