3971 20 — DRILL,TWIST

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

3971 20: DRILL,TWIST.

The DRILL,TWIST is a the manufacturer industrial component. Key specifications include material: STEEL ALLOY OVERALL, point_type: SPLIT, point_angle: 135.0 DEGREES NOMINAL, shank_style: EXTERNALLY THREADED W/HEX NUT, flute_length: 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN, overall_length: 2.312 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5133-01-050-3669, 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

3971 20

NSN: 5133-01-050-3669
FSC: 5133 — Drill Bits, Counterbores, and Countersinks: Hand and Machine
CAGE: 03882 — NEW YORK TWIST DRILL INC (USA)

SPECIFICATIONS

material	STEEL ALLOY OVERALL
point_type	SPLIT
point_angle	135.0 DEGREES NOMINAL
shank_style	EXTERNALLY THREADED W/HEX NUT
flute_length	1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
flute_quantity	2
overall_length	2.312 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN
thread_quantity	28 PER INCH
special_features	THREADED HEX SHANK; LONG LENGTH; WIRE SIZE 20
cutting_end_style	GENERAL PURPOSE
supplementary_features	O/A LENGTH DOES NOT INCLUDE THE THREAD LENGTH PAST THE HEXAGON NUT, THREADS = 1/4 IN. (+1/16 IN.) IN
nominal_thread_diameter	0.250 INCHES IN
NSN	5133-01-050-3669

COMPONENT DIAGRAM

KEY FEATURES

•

CUTTING END STYLE: GENERAL PURPOSE

•

SUPPLEMENTARY FEATURES: O/A LENGTH DOES NOT INCLUDE THE THREAD LENGTH PAST THE HEXAGON NUT, THREADS = 1/4 IN. (+1/16 IN.) IN

•

FLUTE LENGTH: 1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN

•

NOMINAL CUTTING DIAMETER: 0.1610 INCHES IN

•

NOMINAL THREAD DIAMETER: 0.250 INCHES IN

•

CUTTING ROTATION DIRECTION: RIGHT-HAND

•

SPECIFICATION/STANDARD DATA: 80205-NAS965 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD

TECHNICAL CHARACTERISTICS

CUTTING END STYLE	GENERAL PURPOSE
SUPPLEMENTARY FEATURES	O/A LENGTH DOES NOT INCLUDE THE THREAD LENGTH PAST THE HEXAGON NUT, THREADS = 1/4 IN. (+1/16 IN.) IN
FLUTE LENGTH	1.188 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
OVERALL LENGTH	2.312 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN
NOMINAL CUTTING DIAMETER	0.1610 INCHES IN
NOMINAL THREAD DIAMETER	0.250 INCHES IN
CUTTING ROTATION DIRECTION	RIGHT-HAND
SPECIFICATION/STANDARD DATA	80205-NAS965 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NONDEFINITIVE SPEC/STD DATA	D TYPE AND 20 SIZE
SHANK STYLE	EXTERNALLY THREADED W/HEX NUT

OTHER ITEMS IN FSC 5133 — Drill Bits, Counterbores, and Countersinks: Hand and Machine

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

5133-00-001-1296 5133-00-001-1298 5133-00-005-2258 5133-00-005-7727 5133-00-005-8710 5133-00-005-8711 5133-00-005-8712 5133-00-005-8713

SUBSTITUTES & CROSS-REFERENCES 2

NAS965 TYDSZ20Reference document

Same NSN cross-reference

Reference document — Secondary reference

NAS965Reference document

Same NSN cross-reference

Reference document — Design control — primary 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 3971 20?

3971 20 is a DRILL,TWIST.

What parts can replace 3971 20?

There are 2 known substitutes for 3971 20: NAS965 TYDSZ20, NAS965. Substitute compatibility should be verified for your specific system.

What is the NSN for 3971 20?

3971 20 is cataloged in the U.S. Government catalog under NSN 5133-01-050-3669. This indicates validated use in U.S. government and defense supply chains.

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3971 20 — DRILL,TWIST

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