PartsTable
Technical Data Sheet
Download PDF

12387306-39 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

12387306-39: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OR STEEL COMP 304 OVERALL, head_style: FLAT CHAMFER, head_height: 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.853 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN, thread_length: 0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-374-6946, 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
12387306-39
NSN: 5305-01-374-6946
FSC: 5305 — Screws
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OR STEEL COMP 304 OVERALL
head_styleFLAT CHAMFER
head_height0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.853 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
thread_length0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length1.360 INCHES NOMINAL IN
shoulder_length0.625 INCHES NOMINAL FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.621 INCHES MINIMUM AND 0.623 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatmentZINC OVERALL
NSN5305-01-374-6946
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12387306-39 · 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: 0.312 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.360 INCHES NOMINAL IN
•
SHOULDER LENGTH: 0.625 INCHES NOMINAL FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-STD-171 MIL STD SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER DIAMETER: 0.621 INCHES MINIMUM AND 0.623 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.312 INCHES NOMINAL IN
HEAD HEIGHT0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
FASTENER LENGTH1.360 INCHES NOMINAL IN
SHOULDER LENGTH0.625 INCHES NOMINAL FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-STD-171 MIL STD SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER0.621 INCHES MINIMUM AND 0.623 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A493 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES IN
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

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
Ready to buy 12387306-39?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 12387306-39?
12387306-39 is a SCREW,SHOULDER.
What is the NSN for 12387306-39?
12387306-39 is cataloged in the U.S. Government catalog under NSN 5305-01-374-6946. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 12387306-39

✓ 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.