PartsTable
Technical Data Sheet
Download PDF

S1635-63329 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

S1635-63329: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, head_style: HEXAGON, head_height: 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.444 INCHES MINIMUM AND 0.486 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-591-6672, 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
S1635-63329
NSN: 5306-00-591-6672
FSC: 5306 — Bolts
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
head_styleHEXAGON
head_height0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
thread_class3A A
thread_length0.444 INCHES MINIMUM AND 0.486 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.903 INCHES MINIMUM AND 0.923 INCHES MAXIMUM IN
shoulder_length0.281 INCHES MINIMUM AND 0.301 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.3710 INCHES MINIMUM AND 0.3740 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatmentCADMIUM OVERALL
width_between_flats0.562 INCHES NOMINAL IN
NSN5306-00-591-6672
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: S1635-63329 · 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
•
HEAD HEIGHT: 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.903 INCHES MINIMUM AND 0.923 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.281 INCHES MINIMUM AND 0.301 INCHES MAXIMUM FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.3710 INCHES MINIMUM AND 0.3740 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.444 INCHES MINIMUM AND 0.486 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6758 CONDITION F MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
FASTENER LENGTH0.903 INCHES MINIMUM AND 0.923 INCHES MAXIMUM IN
SHOULDER LENGTH0.281 INCHES MINIMUM AND 0.301 INCHES MAXIMUM FIRST SHOULDER IN
SHOULDER DIAMETER0.3710 INCHES MINIMUM AND 0.3740 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.444 INCHES MINIMUM AND 0.486 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6758 CONDITION F MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
SUBSTITUTES & CROSS-REFERENCES 2
5306H34-004Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
C1572Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy S1635-63329?
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 S1635-63329?
S1635-63329 is a BOLT,SHOULDER.
What parts can replace S1635-63329?
There are 2 known substitutes for S1635-63329: 5306H34-004, C1572. Substitute compatibility should be verified for your specific system.
What is the NSN for S1635-63329?
S1635-63329 is cataloged in the U.S. Government catalog under NSN 5306-00-591-6672. 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 — S1635-63329

✓ 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.