PartsTable
Technical Data Sheet
Download PDF

3221AS636-1 — BOLT,INTERNAL WRENCHING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

3221AS636-1: BOLT,INTERNAL WRENCHING.

The BOLT,INTERNAL WRENCHING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FILLISTER COUNTERSUNK, head_height: 1.000 INCHES NOMINAL IN, thread_class: 2G G, head_diameter: 0.937 INCHES NOMINAL IN, thread_length: 6.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-556-9132, 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
3221AS636-1
NSN: 5306-01-556-9132
FSC: 5306 — Bolts
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFILLISTER COUNTERSUNK
head_height1.000 INCHES NOMINAL IN
thread_class2G G
head_diameter0.937 INCHES NOMINAL IN
thread_length6.000 INCHES NOMINAL IN
fastener_length7.750 INCHES NOMINAL IN
special_featuresACME THREADS PIECE IS WELDED TO SPECIAL HEAD
thread_directionRIGHT-HAND
countersink_angle60.0 DEGREES NOMINAL
surface_treatmentPAINT OVERALL
width_across_flats0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
NSN5306-01-556-9132
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3221AS636-1 · 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: 0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
•
HEAD HEIGHT: 1.000 INCHES NOMINAL IN
•
FASTENER LENGTH: 7.750 INCHES NOMINAL IN
•
THREAD LENGTH: 6.000 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A193. GRADE B7 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
HEAD STYLE: FILLISTER COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
HEAD HEIGHT1.000 INCHES NOMINAL IN
FASTENER LENGTH7.750 INCHES NOMINAL IN
THREAD LENGTH6.000 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A193. GRADE B7 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLEFILLISTER COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATURESACME THREADS PIECE IS WELDED TO SPECIAL HEAD
SURFACE TREATMENTPAINT OVERALL
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES 1
3221AS636Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 3221AS636-1?
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 3221AS636-1?
3221AS636-1 is a BOLT,INTERNAL WRENCHING.
What parts can replace 3221AS636-1?
There is 1 known substitute for 3221AS636-1: 3221AS636. Substitute compatibility should be verified for your specific system.
What is the NSN for 3221AS636-1?
3221AS636-1 is cataloged in the U.S. Government catalog under NSN 5306-01-556-9132. 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 — 3221AS636-1

✓ 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.