138771 — RETAINER,PACKING

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

138771: RETAINER,PACKING.

The RETAINER,PACKING is a the manufacturer industrial component. Key specifications include head_style: HEADLESS (SETSCREW), point_style: OVAL, thread_class: 3A A, thread_length: 0.375 INCHES MAXIMUM IN, fastener_length: 0.375 INCHES NOMINAL IN, hardness_rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-591-3354, 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

138771

NSN: 5305-00-591-3354
NIINs: 005913354, 010170034
FSC: 5305 — Screws
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)

SPECIFICATIONS

material	STEEL COMP 2340 OR STEEL COMP 3135 OR STEEL COMP 5120H OR STEEL COMP 4140 OR STEEL COMP 4147H OR STEEL COMP 8630 OR STEEL COMP 8740 OVERALL
head_style	HEADLESS (SETSCREW)
point_style	OVAL
thread_class	3A A
thread_length	0.375 INCHES MAXIMUM IN
fastener_length	0.375 INCHES NOMINAL IN
hardness_rating	45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
thread_direction	RIGHT-HAND
width_across_flats	0.219 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN
internal_drive_style	HEXAGON
nominal_thread_diameter	0.438 INCHES IN
thread_quantity_per_inch	20
NSN	5305-00-591-3354

COMPONENT DIAGRAM

KEY FEATURES

•

WIDTH ACROSS FLATS: 0.219 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN

•

FASTENER LENGTH: 0.375 INCHES NOMINAL IN

•

THREAD LENGTH: 0.375 INCHES MAXIMUM IN

•

HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL

•

NOMINAL THREAD DIAMETER: 0.438 INCHES IN

•

HEAD STYLE: HEADLESS (SETSCREW)

•

THREAD DIRECTION: RIGHT-HAND

•

POINT STYLE: OVAL

TECHNICAL CHARACTERISTICS

WIDTH ACROSS FLATS	0.219 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN
FASTENER LENGTH	0.375 INCHES NOMINAL IN
THREAD LENGTH	0.375 INCHES MAXIMUM IN
HARDNESS RATING	45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER	0.438 INCHES IN
HEAD STYLE	HEADLESS (SETSCREW)
THREAD DIRECTION	RIGHT-HAND
POINT STYLE	OVAL
INTERNAL DRIVE STYLE	HEXAGON
THREAD CLASS	3A A

SUBSTITUTES & CROSS-REFERENCES 1

5305005913354Reference document

Same NSN cross-reference

Reference document — Secondary reference

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 138771?

138771 is a RETAINER,PACKING.

What parts can replace 138771?

There is 1 known substitute for 138771: 5305005913354. Substitute compatibility should be verified for your specific system.

What is the NSN for 138771?

138771 is cataloged in the U.S. Government catalog under NSN 5305-00-591-3354. This indicates validated use in U.S. government and defense supply chains.

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138771 — RETAINER,PACKING

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