PartsTable
Technical Data Sheet
Download PDF

12705-6C-72-B — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

12705-6C-72-B: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: KNURLED NO. 1, head_height: 0.306 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.729 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN, thread_length: 0.605 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN.

This part is cataloged in the U.S. Government catalog under NSN 5305-01-207-7546, 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
12705-6C-72-B
NSN: 5305-01-207-7546
FSC: 5305 — Screws
CAGE: 80539 — SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleKNURLED NO. 1
head_height0.306 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.729 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
thread_length0.605 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length5.102 INCHES MINIMUM AND 5.128 INCHES MAXIMUM IN
shoulder_length4.497 INCHES MINIMUM AND 4.503 INCHES MAXIMUM FIRST SHOULDER IN
special_featuresFINISH COLOR BLACK
thread_directionRIGHT-HAND
shoulder_diameter0.497 INCHES MINIMUM AND 0.498 INCHES MAXIMUM FIRST SHOULDER IN
NSN5305-01-207-7546
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12705-6C-72-B · 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: 0.250 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.306 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
•
FASTENER LENGTH: 5.102 INCHES MINIMUM AND 5.128 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 4.497 INCHES MINIMUM AND 4.503 INCHES MAXIMUM FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OR 171 MIL STD SINGLE TREATMENT RESPONSE OR AMS2485 ASSN STD SINGLE TREATMENT RESPONSE BEARING SURFACE OF HEAD
•
SHOULDER DIAMETER: 0.497 INCHES MINIMUM AND 0.498 INCHES MAXIMUM FIRST SHOULDER IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.250 INCHES NOMINAL IN
HEAD HEIGHT0.306 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
FASTENER LENGTH5.102 INCHES MINIMUM AND 5.128 INCHES MAXIMUM IN
SHOULDER LENGTH4.497 INCHES MINIMUM AND 4.503 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OR 171 MIL STD SINGLE TREATMENT RESPONSE OR AMS2485 ASSN STD SINGLE TREATMENT RESPONSE BEARING SURFACE OF HEAD
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OR 171 MIL STD SINGLE TREATMENT RESPONSE OR AMS2485 ASSN STD SINGLE TREATMENT RESPONSE HEAD
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OR 171 MIL STD SINGLE TREATMENT RESPONSE OR AMS2485 ASSN STD SINGLE TREATMENT RESPONSE THREADS
SHOULDER DIAMETER0.497 INCHES MINIMUM AND 0.498 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.605 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
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: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 12705-6C-72-B?
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 12705-6C-72-B?
12705-6C-72-B is a SCREW,SHOULDER.
What is the NSN for 12705-6C-72-B?
12705-6C-72-B is cataloged in the U.S. Government catalog under NSN 5305-01-207-7546. 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 — 12705-6C-72-B

✓ 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.