MIL-T-21309 TY1CL3 — TANG BREAKOFF TOOL,SCREW THREAD

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

MIL-T-21309 TY1CL3: TANG BREAKOFF TOOL,SCREW THREAD.

TANG BREAKOFF TOOL,SCREW THREAD. Key specifications include length: 0.625 INCHES NOMINAL SQUARE END IN, material: STEEL OVERALL, thread_length: 1.812 INCHES NOMINAL IN, overall_length: 4.031 INCHES NOMINAL IN, shank_diameter: 0.542 INCHES MAXIMUM IN, special_features: FINISHING TAP FOR SCREW THREAD INSERT. This part is cataloged in the U.S.

Government catalog under NSN 5136-00-123-6790, 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

MIL-T-21309 TY1CL3

NSN: 5136-00-123-6790
NIINs: 001236790, 002037075, 002562095, 005551606, 005551608, 007794469, 007849379, 008288832, 008627873, 009354537, 009720399, 009720400, 009720405, 009720406, 009720407, 009879141, 010377032, 010377034, 010377035, 010377038, 010380955, 011086915, 011447855, 012419386, 013238194, 014159458
FSC: 5136 — Taps, Dies, and Collets; Hand and Machine
CAGE: 80244 — GENERAL SERVICES ADMINISTRATION FEDERAL SUPPLY SERVICE (USA)

SPECIFICATIONS

length	0.625 INCHES NOMINAL SQUARE END IN
material	STEEL OVERALL
thread_length	1.812 INCHES NOMINAL IN
flute_quantity	4
overall_length	4.031 INCHES NOMINAL IN
shank_diameter	0.542 INCHES MAXIMUM IN
special_features	FINISHING TAP FOR SCREW THREAD INSERT
style_designator	STRAIGHT FLUTE
thread_direction	RIGHT-HAND
thread_structure	REGULAR
width_across_flats	0.406 INCHES NOMINAL IN
starting_chamfer_type	BOTTOMING
NSN	5136-00-123-6790

COMPONENT DIAGRAM

KEY FEATURES

•

THREAD STRUCTURE: REGULAR

•

NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND 3 CLASS

•

FLUTE QUANTITY: 3

•

MATERIAL: STEEL OVERALL

•

THREAD SIZE AND SERIES/TYPE DESIGNATOR: 0.250-28 STI

•

STARTING CHAMFER TYPE: BOTTOMING

TECHNICAL CHARACTERISTICS

THREAD STRUCTURE	REGULAR
NONDEFINITIVE SPEC/STD DATA	1 TYPE AND 3 CLASS
FLUTE QUANTITY	3
SPECIAL FEATURES	FINISHING TAP FOR SCREW THREAD INSERT
MATERIAL	STEEL OVERALL
THREAD SIZE AND SERIES/TYPE DESIGNATOR	0.250-28 STI
STARTING CHAMFER TYPE	BOTTOMING

OTHER ITEMS IN FSC 5136 — Taps, Dies, and Collets; Hand and Machine

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

5136-00-003-6437 5136-00-004-6689 5136-00-005-5655 5136-00-006-4548 5136-00-006-4562 5136-00-007-1482 5136-00-007-9016 5136-00-008-3607

SUBSTITUTES & CROSS-REFERENCES 2

4FBASame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

MIL-T-21309Reference document

Same NSN cross-reference

Reference document — Identification reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is MIL-T-21309 TY1CL3?

MIL-T-21309 TY1CL3 is a TANG BREAKOFF TOOL,SCREW THREAD.

What parts can replace MIL-T-21309 TY1CL3?

There are 2 known substitutes for MIL-T-21309 TY1CL3: 4FBA, MIL-T-21309. Substitute compatibility should be verified for your specific system.

What is the NSN for MIL-T-21309 TY1CL3?

MIL-T-21309 TY1CL3 is cataloged in the U.S. Government catalog under NSN 5136-00-123-6790. This indicates validated use in U.S. government and defense supply chains.

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