FT4020-5-7AY — SCREW,SHOULDER

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

FT4020-5-7AY: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, head_style: FLAT COUNTERSUNK, thread_class: 3A A, head_diameter: 0.629 INCHES MINIMUM AND 0.634 INCHES MAXIMUM IN, thread_length: 0.531 INCHES NOMINAL IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-190-2202, 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

FT4020-5-7AY

NSN: 5305-01-190-2202
FSC: 5305 — Screws
CAGE: 06950 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)

SPECIFICATIONS

material	IRON ALLOY 660 OVERALL
head_style	FLAT COUNTERSUNK
thread_class	3A A
head_diameter	0.629 INCHES MINIMUM AND 0.634 INCHES MAXIMUM IN
thread_length	0.531 INCHES NOMINAL IN
shoulder_shape	ROUND FIRST SHOULDER
fastener_length	0.953 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
shoulder_length	0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM FIRST SHOULDER IN
special_features	FURNISHED WITH ONE O RING. MUST BE LUBRICATE WITH CETYL ALCOHOL
thread_direction	RIGHT-HAND
countersink_angle	100.0 DEGREES NOMINAL
shoulder_diameter	0.3427 INCHES MINIMUM AND 0.3432 INCHES MAXIMUM FIRST SHOULDER IN
NSN	5305-01-190-2202

COMPONENT DIAGRAM

KEY FEATURES

•

FASTENER LENGTH: 0.953 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN

•

SHOULDER LENGTH: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM FIRST SHOULDER IN

•

SHOULDER DIAMETER: 0.3427 INCHES MINIMUM AND 0.3432 INCHES MAXIMUM FIRST SHOULDER IN

•

THREAD LENGTH: 0.531 INCHES NOMINAL IN

•

SHOULDER SHAPE: ROUND FIRST SHOULDER

•

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

•

NOMINAL THREAD DIAMETER: 0.312 INCHES IN

•

HEAD STYLE: FLAT COUNTERSUNK

TECHNICAL CHARACTERISTICS

FASTENER LENGTH	0.953 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
SHOULDER LENGTH	0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM FIRST SHOULDER IN
SHOULDER DIAMETER	0.3427 INCHES MINIMUM AND 0.3432 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH	0.531 INCHES NOMINAL IN
SHOULDER SHAPE	ROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.312 INCHES IN
HEAD STYLE	FLAT COUNTERSUNK
THREAD DIRECTION	RIGHT-HAND
SPECIAL FEATURES	FURNISHED WITH ONE O RING. MUST BE LUBRICATE WITH CETYL ALCOHOL

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 4

HT4020-5-7AYReference document

Same NSN cross-reference

Reference document — Secondary reference

3M902C5-7ASame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

11879C5-7ASame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

WC4020-5-7AYSame 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 FT4020-5-7AY?

FT4020-5-7AY is a SCREW,SHOULDER.

What parts can replace FT4020-5-7AY?

There are 4 known substitutes for FT4020-5-7AY: HT4020-5-7AY, 3M902C5-7A, 11879C5-7A and 1 more. Substitute compatibility should be verified for your specific system.

What is the NSN for FT4020-5-7AY?

FT4020-5-7AY is cataloged in the U.S. Government catalog under NSN 5305-01-190-2202. This indicates validated use in U.S. government and defense supply chains.

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FT4020-5-7AY — SCREW,SHOULDER

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