PB1378-2560 — SCREW,MACHINE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

PB1378-2560: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, thread_class: 3A A, head_diameter: 0.635 INCHES NOMINAL IN, thread_length: 0.469 INCHES NOMINAL IN, screw_material: STEEL COMP 4140 OR STEEL COMP 8740, fastener_length: 4.219 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-348-5613, 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

PB1378-2560

NSN: 5305-01-348-5613
FSC: 5305 — Screws
CAGE: 27624 — SPS TECHNOLOGIES LLC DBA PB FASTENERS DIV PB FASTENERS (USA)

SPECIFICATIONS

head_style	FLAT COUNTERSUNK
thread_class	3A A
head_diameter	0.635 INCHES NOMINAL IN
thread_length	0.469 INCHES NOMINAL IN
screw_material	STEEL COMP 4140 OR STEEL COMP 8740
fastener_length	4.219 INCHES NOMINAL IN
thread_direction	RIGHT-HAND
countersink_angle	100.0 DEGREES NOMINAL
internal_drive_style	TORQUE SET
nominal_thread_diameter	0.312 INCHES IN
screw_surface_treatment	CADMIUM
minimum_tensile_strength	160000 POUNDS PER SQUARE INCH LBS
NSN	5305-01-348-5613

COMPONENT DIAGRAM

KEY FEATURES

•

SCREW SURFACE TREATMENT: CADMIUM

•

FASTENER LENGTH: 4.219 INCHES NOMINAL IN

•

THREAD LENGTH: 0.469 INCHES NOMINAL IN

•

NOMINAL THREAD DIAMETER: 0.312 INCHES IN

•

HEAD STYLE: FLAT COUNTERSUNK

•

THREAD DIRECTION: RIGHT-HAND

•

SCREW MATERIAL: STEEL COMP 4140 OR STEEL COMP 8740

•

MINIMUM TENSILE STRENGTH: 160000 POUNDS PER SQUARE INCH LBS

TECHNICAL CHARACTERISTICS

SCREW SURFACE TREATMENT	CADMIUM
FASTENER LENGTH	4.219 INCHES NOMINAL IN
THREAD LENGTH	0.469 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER	0.312 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK
THREAD DIRECTION	RIGHT-HAND
SCREW MATERIAL	STEEL COMP 4140 OR STEEL COMP 8740
MINIMUM TENSILE STRENGTH	160000 POUNDS PER SQUARE INCH LBS
INTERNAL DRIVE STYLE	TORQUE SET
COUNTERSINK ANGLE	100.0 DEGREES NOMINAL

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

LE111-0032-2560Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

MA2LE132R5-60Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

SCI785R-5-60Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is PB1378-2560?

PB1378-2560 is a SCREW,MACHINE.

What parts can replace PB1378-2560?

There are 3 known substitutes for PB1378-2560: LE111-0032-2560, MA2LE132R5-60, SCI785R-5-60. Substitute compatibility should be verified for your specific system.

What is the NSN for PB1378-2560?

PB1378-2560 is cataloged in the U.S. Government catalog under NSN 5305-01-348-5613. This indicates validated use in U.S. government and defense supply chains.

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