ST1073-11 — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

ST1073-11: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: HEXAGON, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.360 INCHES MAXIMUM IN, hardness_rating: 29.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-388-7942, 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

ST1073-11

NSN: 5310-01-388-7942
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL
nut_style	HEXAGON
thread_class	3B
thread_series	UNIFIED NATIONAL JOINT FINE (UNJF)
overall_height	0.360 INCHES MAXIMUM IN
hardness_rating	29.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM
thread_direction	RIGHT-HAND
washer_thickness	0.040 INCHES NOMINAL IN
precious_material	SILVER
surface_treatment	SILVER OVERALL
width_across_flats	0.372 INCHES NOMINAL IN
nominal_thread_size	0.312 INCHES IN
NSN	5310-01-388-7942

COMPONENT DIAGRAM

KEY FEATURES

•

WASHER OUTSIDE DIAMETER: 0.525 INCHES NOMINAL IN

•

WIDTH ACROSS FLATS: 0.372 INCHES NOMINAL IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS2411 ASSN STD SINGLE TREATMENT RESPONSE OVERALL

•

THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)

•

PRECIOUS MATERIAL: SILVER

•

HARDNESS RATING: 29.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM

•

WASHER THICKNESS: 0.040 INCHES NOMINAL IN

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	0.360 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER	0.525 INCHES NOMINAL IN
WIDTH ACROSS FLATS	0.372 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	AMS2411 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES	UNIFIED NATIONAL JOINT FINE (UNJF)
PRECIOUS MATERIAL	SILVER
HARDNESS RATING	29.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM
WASHER THICKNESS	0.040 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION	AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND

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 1

LH9606-5Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is ST1073-11?

ST1073-11 is a NUT,SELF-LOCKING,EXTENDED WASHER.

What parts can replace ST1073-11?

There is 1 known substitute for ST1073-11: LH9606-5. Substitute compatibility should be verified for your specific system.

What is the NSN for ST1073-11?

ST1073-11 is cataloged in the U.S. Government catalog under NSN 5310-01-388-7942. This indicates validated use in U.S. government and defense supply chains.

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ST1073-11 — NUT,SELF-LOCKING,EXTENDED WASHER

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