2021AS271 — THUMBSCREW

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

2021AS271: THUMBSCREW.

The THUMBSCREW is a the manufacturer industrial component. Key specifications include material: STEEL COMP XM-12 OVERALL, head_style: KNURLED NO. 1, head_height: 0.500 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.500 INCHES NOMINAL IN, thread_length: 0.420 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-421-2047, 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

2021AS271

NSN: 5305-01-421-2047
FSC: 5305 — Screws
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)

SPECIFICATIONS

material	STEEL COMP XM-12 OVERALL
head_style	KNURLED NO. 1
head_height	0.500 INCHES NOMINAL IN
thread_class	2A A
head_diameter	0.500 INCHES NOMINAL IN
thread_length	0.420 INCHES NOMINAL IN
fastener_length	0.500 INCHES NOMINAL IN
special_features	THREADS UNDERCUT FOR RELIEF: 0.193 IN. DIA. PORM 0.002 IN. X 0.080 IN. WIDE IN
thread_direction	RIGHT-HAND
nominal_thread_diameter	0.250 INCHES IN
thread_quantity_per_inch	28
thread_series_designator	UNF
NSN	5305-01-421-2047

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.500 INCHES NOMINAL IN

•

FASTENER LENGTH: 0.500 INCHES NOMINAL IN

•

THREAD LENGTH: 0.420 INCHES NOMINAL IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5659 ASSN STD SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL THREAD DIAMETER: 0.250 INCHES IN

•

HEAD STYLE: KNURLED NO. 1

•

THREAD DIRECTION: RIGHT-HAND

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.500 INCHES NOMINAL IN
FASTENER LENGTH	0.500 INCHES NOMINAL IN
THREAD LENGTH	0.420 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION	AMS 5659 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.250 INCHES IN
HEAD STYLE	KNURLED NO. 1
THREAD DIRECTION	RIGHT-HAND
SPECIAL FEATURES	THREADS UNDERCUT FOR RELIEF: 0.193 IN. DIA. PORM 0.002 IN. X 0.080 IN. WIDE IN
THREAD CLASS	2A A
THREAD QUANTITY PER INCH	28

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

MBEU143434Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

Ready to buy 2021AS271?

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 2021AS271?

2021AS271 is a THUMBSCREW.

What parts can replace 2021AS271?

There is 1 known substitute for 2021AS271: MBEU143434. Substitute compatibility should be verified for your specific system.

What is the NSN for 2021AS271?

2021AS271 is cataloged in the U.S. Government catalog under NSN 5305-01-421-2047. This indicates validated use in U.S. government and defense supply chains.

Community Feedback

2021AS271 — THUMBSCREW

Request a Quote — 2021AS271