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1CPB — TANG BREAKOFF TOOL,SCREW THREAD

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

1CPB: TANG BREAKOFF TOOL,SCREW THREAD.

TANG BREAKOFF TOOL,SCREW THREAD. Key specifications include length: 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM SQUARE END IN, material: STEEL OVERALL, thread_length: 1.062 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN, overall_length: 2.688 INCHES MINIMUM AND 2.750 INCHES MAXIMUM IN, shank_diameter: 0.3165 INCHES MINIMUM AND 0.3180 INCHES MAXIMUM IN, special_features: FINISHING TAP FOR SCREW THREAD INSERT. This part is cataloged in the U.S.

Government catalog under NSN 5136-01-040-7749, 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
1CPB
NSN: 5136-01-040-7749
FSC: 5136 — Taps, Dies, and Collets; Hand and Machine
CAGE: 01556 — STANLEY ENGINEERED FASTENING LLC (USA)
SPECIFICATIONS
length0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM SQUARE END IN
materialSTEEL OVERALL
thread_length1.062 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN
flute_quantity3
overall_length2.688 INCHES MINIMUM AND 2.750 INCHES MAXIMUM IN
shank_diameter0.3165 INCHES MINIMUM AND 0.3180 INCHES MAXIMUM IN
special_featuresFINISHING TAP FOR SCREW THREAD INSERT
style_designatorSTRAIGHT FLUTE
thread_directionRIGHT-HAND
thread_structureREGULAR
width_across_flats0.234 INCHES MINIMUM AND 0.238 INCHES MAXIMUM IN
starting_chamfer_typePLUG
NSN5136-01-040-7749
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TANG BREAKOFF TOOL,SCREW THREAD TITLE COMPONENT PN 1CPB MFR TANG BREAKOFF TOOL,SCR
KEY FEATURES
•
SHANK DIAMETER: 0.3165 INCHES MINIMUM AND 0.3180 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.234 INCHES MINIMUM AND 0.238 INCHES MAXIMUM IN
•
LENGTH: 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM SQUARE END IN
•
THREAD STRUCTURE: REGULAR
•
THREAD LENGTH: 1.062 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: STRAIGHT FLUTE
•
THREAD PITCH DIAMETERS: +0.1889 TO 0.1922 INCHES IN
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.3165 INCHES MINIMUM AND 0.3180 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.234 INCHES MINIMUM AND 0.238 INCHES MAXIMUM IN
LENGTH0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM SQUARE END IN
THREAD STRUCTUREREGULAR
THREAD LENGTH1.062 INCHES MINIMUM AND 1.188 INCHES MAXIMUM IN
STYLE DESIGNATORSTRAIGHT FLUTE
THREAD PITCH DIAMETERS+0.1889 TO 0.1922 INCHES IN
OVERALL LENGTH2.688 INCHES MINIMUM AND 2.750 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 1 CLASS AND 12-24 STI SIZE
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 4
A-A-59158 TY1CL1Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-T-21309Reference document
Same NSN cross-reference
Reference document — Secondary reference
A-A-59158Reference document
Same NSN cross-reference
Reference document — Identification reference
MIL-T-21309 TY1CL1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1CPB?
1CPB is a TANG BREAKOFF TOOL,SCREW THREAD.
What parts can replace 1CPB?
There are 4 known substitutes for 1CPB: A-A-59158 TY1CL1, MIL-T-21309, A-A-59158 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1CPB?
1CPB is cataloged in the U.S. Government catalog under NSN 5136-01-040-7749. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.