1640902 — SCREW,TAPPING

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

1640902: SCREW,TAPPING.

The SCREW,TAPPING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: OVAL COUNTERSUNK, head_diameter: 5.81 MILLIMETERS MINIMUM AND 6.30 MILLIMETERS MAXIMUM MM, fastener_length: 20.70 MILLIMETERS MINIMUM AND 22.00 MILLIMETERS MAXIMUM MM, countersink_angle: 90.0 DEGREES MINIMUM AND 92.0 DEGREES MAXIMUM, features_provided: CASEHARDENED. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-160-3945, 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

1640902

NSN: 5305-01-160-3945
FSC: 5305 — Screws
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)

SPECIFICATIONS

material	STEEL OVERALL
head_style	OVAL COUNTERSUNK
head_diameter	5.81 MILLIMETERS MINIMUM AND 6.30 MILLIMETERS MAXIMUM MM
fastener_length	20.70 MILLIMETERS MINIMUM AND 22.00 MILLIMETERS MAXIMUM MM
countersink_angle	90.0 DEGREES MINIMUM AND 92.0 DEGREES MAXIMUM
features_provided	CASEHARDENED
surface_treatment	PHOSPHATE OVERALL
internal_drive_style	CROSS RECESS TYPE IA
nonmachine_thread_style	DOG TYPE (TYPE B OR C)
nonmachine_nominal_thread_diameter	3.5 MILLIMETERS MM
material_document_and_classification	GM 6010-M FSCM 11862 MFR REF SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classification	GM 4435-M,CODE A FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL
NSN	5305-01-160-3945

COMPONENT DIAGRAM

KEY FEATURES

•

NONMACHINE NOMINAL THREAD DIAMETER: 3.5 MILLIMETERS MM

•

FASTENER LENGTH: 20.70 MILLIMETERS MINIMUM AND 22.00 MILLIMETERS MAXIMUM MM

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: GM 4435-M,CODE A FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL

•

NONMACHINE THREAD STYLE: DOG TYPE (TYPE B OR C)

•

MATERIAL DOCUMENT AND CLASSIFICATION: GM 6010-M FSCM 11862 MFR REF SINGLE MATERIAL RESPONSE OVERALL

•

FEATURES PROVIDED: CASEHARDENED

•

HEAD STYLE: OVAL COUNTERSUNK

•

SURFACE TREATMENT: PHOSPHATE OVERALL

TECHNICAL CHARACTERISTICS

NONMACHINE NOMINAL THREAD DIAMETER	3.5 MILLIMETERS MM
FASTENER LENGTH	20.70 MILLIMETERS MINIMUM AND 22.00 MILLIMETERS MAXIMUM MM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	GM 4435-M,CODE A FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL
NONMACHINE THREAD STYLE	DOG TYPE (TYPE B OR C)
MATERIAL DOCUMENT AND CLASSIFICATION	GM 6010-M FSCM 11862 MFR REF SINGLE MATERIAL RESPONSE OVERALL
FEATURES PROVIDED	CASEHARDENED
HEAD STYLE	OVAL COUNTERSUNK
SURFACE TREATMENT	PHOSPHATE OVERALL
INTERNAL DRIVE STYLE	CROSS RECESS TYPE IA
COUNTERSINK ANGLE	90.0 DEGREES MINIMUM AND 92.0 DEGREES MAXIMUM

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 1

11503505Reference 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 1640902?

1640902 is a SCREW,TAPPING.

What parts can replace 1640902?

There is 1 known substitute for 1640902: 11503505. Substitute compatibility should be verified for your specific system.

What is the NSN for 1640902?

1640902 is cataloged in the U.S. Government catalog under NSN 5305-01-160-3945. This indicates validated use in U.S. government and defense supply chains.

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