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12705-8C-6 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

12705-8C-6: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, 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: 0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-354-0887, 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
12705-8C-6
NSN: 5305-01-354-0887
FSC: 5305 — Screws
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT CHAMFER
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_length0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.875 INCHES MINIMUM AND 0.905 INCHES MAXIMUM IN
hardness_rating36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.497 INCHES MINIMUM AND 0.498 INCHES MAXIMUM FIRST SHOULDER IN
NSN5305-01-354-0887
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12705-8C-6 · 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: 0.477 INCHES MINIMUM IN
•
HEAD HEIGHT: 0.306 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.875 INCHES MINIMUM AND 0.905 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.497 INCHES MINIMUM AND 0.498 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.477 INCHES MINIMUM IN
HEAD HEIGHT0.306 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
FASTENER LENGTH0.875 INCHES MINIMUM AND 0.905 INCHES MAXIMUM IN
SHOULDER LENGTH0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM FIRST SHOULDER IN
SHOULDER DIAMETER0.497 INCHES MINIMUM AND 0.498 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEFLAT CHAMFER
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
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FREQUENTLY ASKED QUESTIONS
What is 12705-8C-6?
12705-8C-6 is a SCREW,SHOULDER.
What is the NSN for 12705-8C-6?
12705-8C-6 is cataloged in the U.S. Government catalog under NSN 5305-01-354-0887. 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.