CHT4020-3-8A — SCREW,CLOSE TOLERANCE

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

CHT4020-3-8A: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING FASTENER, head_style: FLAT COUNTERSUNK UNDERCUT, grip_length: 0.500 INCHES NOMINAL IN, head_height: 0.0439 INCHES MINIMUM AND 0.0459 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-076-6316, 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

CHT4020-3-8A

NSN: 5305-01-076-6316
FSC: 5305 — Screws
CAGE: 80539 — SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING FASTENER
head_style	FLAT COUNTERSUNK UNDERCUT
grip_length	0.500 INCHES NOMINAL IN
head_height	0.0439 INCHES MINIMUM AND 0.0459 INCHES MAXIMUM IN
thread_class	3A A
grip_diameter	0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN
head_diameter	0.3765 INCHES MINIMUM AND 0.3813 INCHES MAXIMUM IN
thread_length	0.390 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
surface_finish	32.0 MICROINCHES GRIP
fastener_length	0.890 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
thread_direction	RIGHT-HAND
countersink_angle	100.0 DEGREES NOMINAL
NSN	5305-01-076-6316

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE FINISH: 32.0 MICROINCHES THREADS

•

HEAD HEIGHT: 0.0439 INCHES MINIMUM AND 0.0459 INCHES MAXIMUM IN

•

FASTENER LENGTH: 0.890 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER

•

THREAD LENGTH: 0.390 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE FASTENER

TECHNICAL CHARACTERISTICS

SURFACE FINISH	32.0 MICROINCHES THREADS
SURFACE FINISH	32.0 MICROINCHES GRIP
HEAD HEIGHT	0.0439 INCHES MINIMUM AND 0.0459 INCHES MAXIMUM IN
FASTENER LENGTH	0.890 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
THREAD LENGTH	0.390 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
MATERIAL DOCUMENT AND CLASSIFICATION	MIL-R-25988 TY 1,CL 1,GRADE 70 MIL SPEC SINGLE MATERIAL RESPONSE PRIMARY WASHER
NOMINAL THREAD DIAMETER	0.190 INCHES IN
FEATURES PROVIDED	O RING

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

HT4020-3-8ASame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

11925C3-8ASame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

642AS0738Reference document

Same NSN cross-reference

Reference document — Drawing number reference only

LIFECYCLE

NSN statusActive· U.S. Government catalog

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

Ready to buy CHT4020-3-8A?

Compare prices from verified sellers on eBay

Buy on eBay →

As an eBay Partner, PartsTable may earn a commission. Your price is not affected.

FREQUENTLY ASKED QUESTIONS

What is CHT4020-3-8A?

CHT4020-3-8A is a SCREW,CLOSE TOLERANCE.

What parts can replace CHT4020-3-8A?

There are 3 known substitutes for CHT4020-3-8A: HT4020-3-8A, 11925C3-8A, 642AS0738. Substitute compatibility should be verified for your specific system.

What is the NSN for CHT4020-3-8A?

CHT4020-3-8A is cataloged in the U.S. Government catalog under NSN 5305-01-076-6316. This indicates validated use in U.S. government and defense supply chains.

Community Feedback

CHT4020-3-8A — SCREW,CLOSE TOLERANCE

Request a Quote — CHT4020-3-8A