31X28R — NUT,PLAIN,HEXAGON

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

31X28R: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), hardness_rating: 32.0 ROCKWELL C MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-011-8615, 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

31X28R

NSN: 5310-00-011-8615
FSC: 5310 — Nuts and Washers
CAGE: 1DF03 — ABM EQUIPMENT, LLC (USA)

SPECIFICATIONS

material	STEEL OVERALL
nut_style	HEXAGON
nut_height	0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN
thread_class	2B
thread_series	UNIFIED NATIONAL COARSE (UNC)
hardness_rating	32.0 ROCKWELL C MAXIMUM
thread_direction	RIGHT-HAND
surface_treatment	PHOSPHATE OVERALL
width_across_flats	0.551 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
nominal_thread_size	0.375 INCHES IN
bearing_surface_type	FLAT
supplementary_features	REF DATA ANSI B18.2.2,TABLE 3
NSN	5310-00-011-8615

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.551 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-P-16232,TYPE Z,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL

•

THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)

•

SUPPLEMENTARY FEATURES: REF DATA ANSI B18.2.2,TABLE 3

•

HARDNESS RATING: 32.0 ROCKWELL C MAXIMUM

•

MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A563 ASSN STD SINGLE MATERIAL RESPONSE OR SAE J995,UNS K05802 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

THREAD DIRECTION: RIGHT-HAND

•

NOMINAL THREAD SIZE: 0.375 INCHES IN

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.551 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-P-16232,TYPE Z,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES	UNIFIED NATIONAL COARSE (UNC)
SUPPLEMENTARY FEATURES	REF DATA ANSI B18.2.2,TABLE 3
HARDNESS RATING	32.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM A563 ASSN STD SINGLE MATERIAL RESPONSE OR SAE J995,UNS K05802 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTION	RIGHT-HAND
NOMINAL THREAD SIZE	0.375 INCHES IN
SPECIFICATION/STANDARD DATA	81348-FF-N-836 GOVERNMENT SPECIFICATION AND 96906-MS35690/CANCELED/ GOVERNMENT STANDARD AND 24617-118615 MANUFACTURERS STANDARD
NONDEFINITIVE SPEC/STD DATA	2 TYPE AND 4 STYLE AND 3/8-16IN. SIZE IN

SUBSTITUTES & CROSS-REFERENCES 3

118615Reference document

Same NSN cross-reference

Reference document — Secondary reference

FF-N-836Reference document

Same NSN cross-reference

Reference document — Identification reference

MS35690-603Reference 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 31X28R?

31X28R is a NUT,PLAIN,HEXAGON.

What parts can replace 31X28R?

There are 3 known substitutes for 31X28R: 118615, FF-N-836, MS35690-603. Substitute compatibility should be verified for your specific system.

What is the NSN for 31X28R?

31X28R is cataloged in the U.S. Government catalog under NSN 5310-00-011-8615. This indicates validated use in U.S. government and defense supply chains.

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