PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 0511404A
0511404A ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The BOLT,RIBBED SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8640 OR STEEL COMP 8740 OR STEEL COMP 3135 OR STEEL COMP 4140 OR STEEL COMP 4135 OVERALL, head_style: FLAT CHAMFER, rib_length: 0.781 INCHES NOMINAL IN, head_height: 0.312 INCHES NOMINAL IN, rib_quantity: 25, thread_class: 3A A. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-383-4957, 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
0511404A
NSN: 5306-00-383-4957
FSC: 5306
CAGE: 51665 — RIVINIUS INC LITTLEFORD MACHINERY DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 8640 OR STEEL COMP 8740 OR STEEL COMP 3135 OR STEEL COMP 4140 OR STEEL COMP 4135 OVERALL
head_styleFLAT CHAMFER
rib_length0.781 INCHES NOMINAL IN
head_height0.312 INCHES NOMINAL IN
rib_quantity25
thread_class3A A
head_diameter1.188 INCHES NOMINAL IN
thread_length1.156 INCHES MINIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length2.469 INCHES NOMINAL IN
hardness_rating300.0 BRINELL STANDARD MINIMUM AND 350.0 BRINELL STANDARD MAXIMUM OVERALL
shoulder_length0.906 INCHES NOMINAL FIRST SHOULDER IN
NSN5306-00-383-4957
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 0511404A · 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
•
DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS: 0.125 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE AND QQ-P-416,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 3 FED SPEC 3RD TREATMENT RESPONSE AND QQ-Z-325,TY 2,CL 3 FED SPEC 4TH TREATMENT RESPONSE OVERALL
•
THREAD QUANTITY PER INCH: 16
•
NOMINAL THREAD DIAMETER: 0.750 INCHES IN
•
SHOULDER LENGTH: 0.906 INCHES NOMINAL FIRST SHOULDER IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL
•
RIB LENGTH: 0.781 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS0.125 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE AND QQ-P-416,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 3 FED SPEC 3RD TREATMENT RESPONSE AND QQ-Z-325,TY 2,CL 3 FED SPEC 4TH TREATMENT RESPONSE OVERALL
THREAD QUANTITY PER INCH16
NOMINAL THREAD DIAMETER0.750 INCHES IN
SHOULDER LENGTH0.906 INCHES NOMINAL FIRST SHOULDER IN
SURFACE TREATMENTCADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL
SPECIAL FEATURES5/32 IN. BY 45 DEG CHAMFER ON HEAD END IN
RIB LENGTH0.781 INCHES NOMINAL IN
FEATURES PROVIDEDCASEHARDENED
RIB QUANTITY25
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
68248Upgraded Successor
successor cross-reference
successor
62100-7Interchangeable
interchangeable cross-reference
interchangeable
1457-2-01Interchangeable
interchangeable cross-reference
interchangeable
X1457Interchangeable
interchangeable cross-reference
interchangeable
MS17121-3Interchangeable
interchangeable cross-reference
interchangeable
RC42GF222KInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy 0511404A?
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 0511404A?
0511404A is a BOLT,RIBBED SHOULDER.
What parts can replace 0511404A?
There are 25 known substitutes for 0511404A: 68248, 62100-7, 1457-2-01 and 22 more. Substitute compatibility should be verified for your specific system.
Is 0511404A still available?
0511404A is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 0511404A

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026