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STD137A-3-0 — STUD,BALL

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

STD137A-3-0: STUD,BALL.

The STUD,BALL is a the manufacturer industrial component. Key specifications include material: STEEL, head_diameter: 0.4998 INCHES MINIMUM AND 0.5002 INCHES MAXIMUM IN, overall_length: 1.750 INCHES NOMINAL IN, surface_finish: 63.0 MICROINCHES OVERALL, special_features: SHANK IS 1.120 IN. LONG AND IS UNTHREADED, 0.2497 IN.

MIN., 0.2500 IN. MAX. DIA.

IN, style_designator: BALL. This part is cataloged in the U.S. Government catalog under NSN 5307-01-383-9081, 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
STD137A-3-0
NSN: 5307-01-383-9081
FSC: 5307 — Studs
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL
head_diameter0.4998 INCHES MINIMUM AND 0.5002 INCHES MAXIMUM IN
overall_length1.750 INCHES NOMINAL IN
surface_finish63.0 MICROINCHES OVERALL
special_featuresSHANK IS 1.120 IN. LONG AND IS UNTHREADED, 0.2497 IN. MIN., 0.2500 IN. MAX. DIA. IN
style_designatorBALL
distance_from_spherical_head_centerline_to_head_end0.2499 INCHES MINIMUM AND 0.2501 INCHES MAXIMUM IN
NSN5307-01-383-9081
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: STD137A-3-0 · 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
•
SURFACE FINISH: 63.0 MICROINCHES OVERALL
•
STYLE DESIGNATOR: BALL
•
DISTANCE FROM SPHERICAL HEAD CENTERLINE TO HEAD END: 0.2499 INCHES MINIMUM AND 0.2501 INCHES MAXIMUM IN
•
MATERIAL: STEEL
•
HEAD DIAMETER: 0.4998 INCHES MINIMUM AND 0.5002 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES OVERALL
STYLE DESIGNATORBALL
OVERALL LENGTH1.750 INCHES NOMINAL IN
SPECIAL FEATURESSHANK IS 1.120 IN. LONG AND IS UNTHREADED, 0.2497 IN. MIN., 0.2500 IN. MAX. DIA. IN
DISTANCE FROM SPHERICAL HEAD CENTERLINE TO HEAD END0.2499 INCHES MINIMUM AND 0.2501 INCHES MAXIMUM IN
MATERIALSTEEL
HEAD DIAMETER0.4998 INCHES MINIMUM AND 0.5002 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5307 — Studs
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5307-00-000-6436 5307-00-001-1578 5307-00-001-1761 5307-00-001-2366 5307-00-001-4491 5307-00-001-4624 5307-00-001-4625
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is STD137A-3-0?
STD137A-3-0 is a STUD,BALL.
What is the NSN for STD137A-3-0?
STD137A-3-0 is cataloged in the U.S. Government catalog under NSN 5307-01-383-9081. 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.