R440-1/2 — SCREW,MACHINE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

R440-1/2: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: PAN NO. 2, head_height: 0.080 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.238 INCHES MAXIMUM IN, thread_length: 0.500 INCHES NOMINAL IN, screw_material: STEEL CORROSION RESISTING.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-602-3044, 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

R440-1/2

NSN: 5305-01-602-3044
FSC: 5305 — Screws
CAGE: 4XVX3 — SURE SEAL CONNECTORS (USA)

SPECIFICATIONS

head_style	PAN NO. 2
head_height	0.080 INCHES MAXIMUM IN
thread_class	2A A
head_diameter	0.238 INCHES MAXIMUM IN
thread_length	0.500 INCHES NOMINAL IN
screw_material	STEEL CORROSION RESISTING
fastener_length	0.500 INCHES NOMINAL IN
special_features	THIS HAS AN UNDERCUT-CLEAR HOLE FOR AN 0-RING TO MAKE THIS AN AIR, WATER OR GAS-TIGHT SEAL; THE UNDERCUT IS 0.125 INCHES MINIMUM AND 0.129 INCHES MAXIMUM; O-RING IS MADE OF SILICONE RUBBER IN
thread_direction	RIGHT-HAND
features_provided	O RING
internal_drive_style	CROSS RECESS TYPE III
head_surface_treatment	PASSIVATE
NSN	5305-01-602-3044

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.080 INCHES MAXIMUM IN

•

SCREW SURFACE TREATMENT: PASSIVATE

•

FASTENER LENGTH: 0.500 INCHES NOMINAL IN

•

THREAD LENGTH: 0.500 INCHES NOMINAL IN

•

SHANK SURFACE TREATMENT: PASSIVATE

•

BEARING SURFACE OF HEAD SURFACE TREATMENT: PASSIVATE

•

NOMINAL THREAD DIAMETER: 0.112 INCHES IN

•

FEATURES PROVIDED: O RING

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.080 INCHES MAXIMUM IN
SCREW SURFACE TREATMENT	PASSIVATE
FASTENER LENGTH	0.500 INCHES NOMINAL IN
THREAD LENGTH	0.500 INCHES NOMINAL IN
SHANK SURFACE TREATMENT	PASSIVATE
BEARING SURFACE OF HEAD SURFACE TREATMENT	PASSIVATE
NOMINAL THREAD DIAMETER	0.112 INCHES IN
FEATURES PROVIDED	O RING
HEAD SURFACE TREATMENT	PASSIVATE
HEAD STYLE	PAN NO. 2

OTHER ITEMS IN FSC 5305 — Screws

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

5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753

SUBSTITUTES & CROSS-REFERENCES 1

3113754C1Same 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 R440-1/2?

R440-1/2 is a SCREW,MACHINE.

What parts can replace R440-1/2?

There is 1 known substitute for R440-1/2: 3113754C1. Substitute compatibility should be verified for your specific system.

What is the NSN for R440-1/2?

R440-1/2 is cataloged in the U.S. Government catalog under NSN 5305-01-602-3044. This indicates validated use in U.S. government and defense supply chains.

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