PartsTable
Technical Data Sheet
Download PDF

5311012 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

5311012: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, grip_length: 1.250 INCHES NOMINAL IN, head_height: 0.120 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.500 INCHES NOMINAL IN, fastener_length: 1.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-531-1012, 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
5311012
NSN: 5306-00-531-1012
FSC: 5306 — Bolts
CAGE: 19204 — ARMY, UNITED STATES DEPARTMENT OF THE DBA ROCK ISLAND ARSENAL JMTC (USA)
SPECIFICATIONS
head_styleHEXAGON
grip_length1.250 INCHES NOMINAL IN
head_height0.120 INCHES NOMINAL IN
thread_class2A A
thread_length0.500 INCHES NOMINAL IN
fastener_length1.750 INCHES NOMINAL IN
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
surface_treatmentPHOSPHATE MANGANESE OR PHOSPHATE ZINC OVERALL
width_between_flats0.380 INCHES NOMINAL IN
nominal_thread_diameter0.190 INCHES IN
thread_quantity_per_inch32
NSN5306-00-531-1012
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5311012 · 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: 0.120 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.750 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-S-16232 MIL SPEC ALL TREATMENT RESPONSES OVERALL
•
THREAD LENGTH: 0.500 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-637 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-637 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-637 FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-637 FED SPEC 4TH MATERIAL RESPONSE OR QQ-B-637 FED SPEC 5TH MATERIAL RESPONSE OR QQ-B-637 FED SPEC ALL MATERIAL RESPONSES OR ASTM A108 ASSN STD 6TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 7TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 8TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 9TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 10TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 11TH MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.120 INCHES NOMINAL IN
FASTENER LENGTH1.750 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-S-16232 MIL SPEC ALL TREATMENT RESPONSES OVERALL
THREAD LENGTH0.500 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-637 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-637 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-637 FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-637 FED SPEC 4TH MATERIAL RESPONSE OR QQ-B-637 FED SPEC 5TH MATERIAL RESPONSE OR QQ-B-637 FED SPEC ALL MATERIAL RESPONSES OR ASTM A108 ASSN STD 6TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 7TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 8TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 9TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 10TH MATERIAL RESPONSE OR ASTM A108 ASSN STD 11TH MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH1.250 INCHES NOMINAL IN
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
5305005311012Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 5311012?
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 5311012?
5311012 is a BOLT,MACHINE.
What parts can replace 5311012?
There is 1 known substitute for 5311012: 5305005311012. Substitute compatibility should be verified for your specific system.
What is the NSN for 5311012?
5311012 is cataloged in the U.S. Government catalog under NSN 5306-00-531-1012. 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 — 5311012

✓ 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.