SD.300.55135 — NUT,SELF-LOCKING,CASTELLATED,HEX

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

SD.300.55135: NUT,SELF-LOCKING,CASTELLATED,HEX.

NUT,SELF-LOCKING,CASTELLATED,HEX. Key specifications include material: STEEL COMP 11L37 OVERALL, nut_style: CASTELLATED, HEXAGON, nut_height: 0.320 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNJS, hardness_rating: 26.0 ROCKWELL C MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-015-5728, 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

SD.300.55135

NSN: 5310-01-015-5728
FSC: 5310 — Nuts and Washers
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)

SPECIFICATIONS

material	STEEL COMP 11L37 OVERALL
nut_style	CASTELLATED, HEXAGON
nut_height	0.320 INCHES NOMINAL IN
thread_class	3B
thread_series	UNJS
hardness_rating	26.0 ROCKWELL C MAXIMUM
locking_feature	FREE-RUNNING ALL METAL DESIGN
thread_direction	RIGHT-HAND
width_across_flats	0.435 INCHES NOMINAL IN
nominal_thread_size	0.250 INCHES IN
bearing_surface_type	CHAMFERED
thread_quantity_per_inch	28
NSN	5310-01-015-5728

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.435 INCHES NOMINAL IN

•

THREAD SERIES: UNJS

•

HARDNESS RATING: 26.0 ROCKWELL C MAXIMUM

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5020 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.250 INCHES IN

•

LOCKING FEATURE: FREE-RUNNING ALL METAL DESIGN

•

NUT HEIGHT: 0.320 INCHES NOMINAL IN

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.435 INCHES NOMINAL IN
THREAD SERIES	UNJS
HARDNESS RATING	26.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5020 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.250 INCHES IN
LOCKING FEATURE	FREE-RUNNING ALL METAL DESIGN
NUT HEIGHT	0.320 INCHES NOMINAL IN
NUT STYLE	CASTELLATED, HEXAGON
THREAD CLASS	3B

SUBSTITUTES & CROSS-REFERENCES 3

184909Reference document

Same NSN cross-reference

Reference document — Secondary reference

Z2336-048Reference document

Same NSN cross-reference

Reference document — Secondary reference

753949Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is SD.300.55135?

SD.300.55135 is a NUT,SELF-LOCKING,CASTELLATED,HEX.

What parts can replace SD.300.55135?

There are 3 known substitutes for SD.300.55135: 184909, Z2336-048, 753949. Substitute compatibility should be verified for your specific system.

What is the NSN for SD.300.55135?

SD.300.55135 is cataloged in the U.S. Government catalog under NSN 5310-01-015-5728. This indicates validated use in U.S. government and defense supply chains.

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SD.300.55135 — NUT,SELF-LOCKING,CASTELLATED,HEX

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