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Technical Data Sheet
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123GT10129-51 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

123GT10129-51: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, fastener_length: 3.312 INCHES MAXIMUM IN, thread_direction: RIGHT-HAND, nominal_thread_diameter: 1.250 INCHES IN, material_document_and_classification: 4340 MFR REF 1ST MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-477-9130, 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
123GT10129-51
NSN: 5306-01-477-9130
FSC: 5306 — Bolts
CAGE: 70974 — NORTHROP GRUMMAN SYSTEMS CORPORATION DIV NORTHROP GRUMMAN AERONAUTICS SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
fastener_length3.312 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
nominal_thread_diameter1.250 INCHES IN
material_document_and_classification4340 MFR REF 1ST MATERIAL RESPONSE OVERALL
NSN5306-01-477-9130
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 123GT10129-51 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FASTENER LENGTH: 3.312 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 4340 MFR REF 1ST MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 1.250 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
FASTENER LENGTH3.312 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION4340 MFR REF 1ST MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER1.250 INCHES IN
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL OVERALL
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 123GT10129-51?
123GT10129-51 is a BOLT,MACHINE.
What is the NSN for 123GT10129-51?
123GT10129-51 is cataloged in the U.S. Government catalog under NSN 5306-01-477-9130. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
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.