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2057G127 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

2057G127: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: DEE CHAMFER, head_height: 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.625 INCHES NOMINAL IN, thread_length: 0.590 INCHES MINIMUM AND 0.600 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-795-1034, 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
2057G127
NSN: 5306-00-795-1034
FSC: 5306 — Bolts
CAGE: 0AHP5 — CURTISS-WRIGHT CONTROLS, INC. DIV ACTUATION DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleDEE CHAMFER
head_height0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.625 INCHES NOMINAL IN
thread_length0.590 INCHES MINIMUM AND 0.600 INCHES MAXIMUM IN
shoulder_shapeROUND ALL SHOULDERS
fastener_length1.420 INCHES NOMINAL IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM SECOND SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.4252 INCHES MINIMUM AND 0.4256 INCHES MAXIMUM FIRST SHOULDER IN
NSN5306-00-795-1034
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2057G127 · 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
•
HEAD HEIGHT: 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.420 INCHES NOMINAL IN
•
SHOULDER LENGTH: 0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM SECOND SHOULDER IN
•
DISTANCE FROM CENTERLINE TO FLAT: 0.240 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
•
SHOULDER DIAMETER: 0.4252 INCHES MINIMUM AND 0.4256 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.590 INCHES MINIMUM AND 0.600 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND ALL SHOULDERS
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
FASTENER LENGTH1.420 INCHES NOMINAL IN
SHOULDER LENGTH0.055 INCHES MINIMUM AND 0.065 INCHES MAXIMUM SECOND SHOULDER IN
SHOULDER LENGTH0.405 INCHES MINIMUM AND 0.415 INCHES MAXIMUM FIRST SHOULDER IN
DISTANCE FROM CENTERLINE TO FLAT0.240 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
SHOULDER DIAMETER0.4252 INCHES MINIMUM AND 0.4256 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.590 INCHES MINIMUM AND 0.600 INCHES MAXIMUM IN
SHOULDER SHAPEROUND ALL SHOULDERS
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
CRITICALITY CODE JUSTIFICATIONAATN
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: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2057G127?
2057G127 is a BOLT,SHOULDER.
What is the NSN for 2057G127?
2057G127 is cataloged in the U.S. Government catalog under NSN 5306-00-795-1034. 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.