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12387306-9 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

12387306-9: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 0.209 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.419 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN, thread_length: 0.363 INCHES MINIMUM AND 0.418 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-389-3422, 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
12387306-9
NSN: 5305-01-389-3422
FSC: 5305 — Screws
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT CHAMFER
head_height0.209 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.419 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
thread_length0.363 INCHES MINIMUM AND 0.418 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.625 INCHES MINIMUM AND 0.700 INCHES MAXIMUM IN
hardness_rating32.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length0.625 INCHES NOMINAL FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.306 INCHES MINIMUM AND 0.310 INCHES MAXIMUM FIRST SHOULDER IN
NSN5305-01-389-3422
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12387306-9 · 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
•
WIDTH ACROSS FLATS: 0.156 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.209 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.625 INCHES MINIMUM AND 0.700 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.625 INCHES NOMINAL FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-STD-171, 1.9.2.3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER DIAMETER: 0.306 INCHES MINIMUM AND 0.310 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.363 INCHES MINIMUM AND 0.418 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.156 INCHES NOMINAL IN
HEAD HEIGHT0.209 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN
FASTENER LENGTH0.625 INCHES MINIMUM AND 0.700 INCHES MAXIMUM IN
SHOULDER LENGTH0.625 INCHES NOMINAL FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171, 1.9.2.3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER0.306 INCHES MINIMUM AND 0.310 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.363 INCHES MINIMUM AND 0.418 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A574 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 1
5305013893422Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 12387306-9?
12387306-9 is a SCREW,SHOULDER.
What parts can replace 12387306-9?
There is 1 known substitute for 12387306-9: 5305013893422. Substitute compatibility should be verified for your specific system.
What is the NSN for 12387306-9?
12387306-9 is cataloged in the U.S. Government catalog under NSN 5305-01-389-3422. 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.