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PartsTable / COMPONENT / MIL-T-21309 TY1CL4
MIL-T-21309 TY1CL4 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The TOOL KIT,SCREW THREAD INSERT is a the manufacturer industrial component. Key specifications include length: 0.688 INCHES NOMINAL SQUARE END IN, material: STEEL OVERALL, thread_length: 1.812 INCHES NOMINAL IN, overall_length: 3.812 INCHES NOMINAL IN, shank_diameter: 0.625 INCHES NOMINAL IN, special_features: SCREW THD INVERT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5136-00-229-9274, 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 TY1CL4
NSN: 5136-00-229-9274
FSC: 5136
CAGE: 80244 — GENERAL SERVICES ADMINISTRATION FEDERAL SUPPLY SERVICE (USA)
SPECIFICATIONS
length0.688 INCHES NOMINAL SQUARE END IN
materialSTEEL OVERALL
thread_length1.812 INCHES NOMINAL IN
flute_quantity4
overall_length3.812 INCHES NOMINAL IN
shank_diameter0.625 INCHES NOMINAL IN
special_featuresSCREW THD INVERT
style_designatorSTRAIGHT FLUTE
thread_directionRIGHT-HAND
thread_structureREGULAR
width_across_flats0.360 INCHES NOMINAL IN
starting_chamfer_typePLUG
NSN5136-00-229-9274
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TOOL KIT,SCREW THREAD INSERT TITLE COMPONENT PN MIL-T-21309 TY1CL4 MFR TOOL KIT,SCREW THREAD
KEY FEATURES
•
THREAD DIRECTION: RIGHT-HAND
•
SHANK DIAMETER: 0.625 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
THREAD FORMING METHOD: GROUND
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 14.0 MM STI MM
•
STYLE DESIGNATOR: STRAIGHT FLUTE
•
FLUTE QUANTITY: 4
•
THREAD STRUCTURE: REGULAR
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
SHANK DIAMETER0.625 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
THREAD FORMING METHODGROUND
THREAD SIZE AND SERIES/TYPE DESIGNATOR14.0 MM STI MM
STYLE DESIGNATORSTRAIGHT FLUTE
FLUTE QUANTITY4
THREAD STRUCTUREREGULAR
OVERALL LENGTH3.812 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 4 CLASS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
MIL-T-21309Interchangeable
interchangeable cross-reference
interchangeable
MIL-T-21309 TY1CL4Interchangeable
interchangeable cross-reference
interchangeable
2-21Interchangeable
interchangeable cross-reference
interchangeable
1371-1Interchangeable
interchangeable cross-reference
interchangeable
502618Interchangeable
interchangeable cross-reference
interchangeable
SMC502618-5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-T-21309 TY1CL4?
MIL-T-21309 TY1CL4 is a TOOL KIT,SCREW THREAD INSERT.
What parts can replace MIL-T-21309 TY1CL4?
There are 6 known substitutes for MIL-T-21309 TY1CL4: MIL-T-21309, MIL-T-21309 TY1CL4, 2-21 and 3 more. Substitute compatibility should be verified for your specific system.
Is MIL-T-21309 TY1CL4 still available?
MIL-T-21309 TY1CL4 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026