PBF1285-04-179 — SCREW,SHOULDER

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

PBF1285-04-179: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, thread_class: 2A A, head_diameter: 0.166 INCHES NOMINAL IN, thread_length: 0.174 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER, fastener_length: 0.344 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-134-8725, 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

PBF1285-04-179

NSN: 5305-01-134-8725
FSC: 5305 — Screws
CAGE: 27624 — SPS TECHNOLOGIES LLC DBA PB FASTENERS DIV PB FASTENERS (USA)

SPECIFICATIONS

head_style	FLAT COUNTERSUNK
thread_class	2A A
head_diameter	0.166 INCHES NOMINAL IN
thread_length	0.174 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
shoulder_shape	ROUND FIRST SHOULDER
fastener_length	0.344 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN
hardness_rating	33.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length	0.113 INCHES MINIMUM FIRST SHOULDER IN
thread_direction	RIGHT-HAND
countersink_angle	100.0 DEGREES NOMINAL
shoulder_diameter	0.115 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST SHOULDER IN
internal_drive_style	SLOT
NSN	5305-01-134-8725

COMPONENT DIAGRAM

KEY FEATURES

•

FASTENER LENGTH: 0.344 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN

•

SHOULDER LENGTH: 0.113 INCHES MINIMUM FIRST SHOULDER IN

•

SHOULDER DIAMETER: 0.115 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST SHOULDER IN

•

THREAD LENGTH: 0.174 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN

•

SHOULDER SHAPE: ROUND FIRST SHOULDER

•

HARDNESS RATING: 33.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL

•

NOMINAL THREAD DIAMETER: 0.112 INCHES IN

•

HEAD STYLE: FLAT COUNTERSUNK

TECHNICAL CHARACTERISTICS

FASTENER LENGTH	0.344 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN
SHOULDER LENGTH	0.113 INCHES MINIMUM FIRST SHOULDER IN
SHOULDER DIAMETER	0.115 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH	0.174 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
SHOULDER SHAPE	ROUND FIRST SHOULDER
HARDNESS RATING	33.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER	0.112 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK
THREAD DIRECTION	RIGHT-HAND
INTERNAL DRIVE STYLE	SLOT

OTHER ITEMS IN FSC 5305 — Screws

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831

SUBSTITUTES & CROSS-REFERENCES 3

GS551C04-179Reference document

Same NSN cross-reference

Reference document — Secondary reference

2R1862-5Reference document

Same NSN cross-reference

Reference document — Secondary reference

BM19069-04-179Reference 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 PBF1285-04-179?

PBF1285-04-179 is a SCREW,SHOULDER.

What parts can replace PBF1285-04-179?

There are 3 known substitutes for PBF1285-04-179: GS551C04-179, 2R1862-5, BM19069-04-179. Substitute compatibility should be verified for your specific system.

What is the NSN for PBF1285-04-179?

PBF1285-04-179 is cataloged in the U.S. Government catalog under NSN 5305-01-134-8725. This indicates validated use in U.S. government and defense supply chains.

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