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Technical Data Sheet
PartsTable / COMPONENT / 1263586
1263586 ✓ 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,U is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_class: 2A A, thread_length: 1.500 INCHES MINIMUM IN, hardness_rating: 29.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL, style_designator: SQUARE BEND, thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-737-6831, 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
1263586
NSN: 5306-00-737-6831
FSC: 5306
CAGE: 12204 — CHRYSLER REALTY COMPANY LLC DBA DAIMLER CHRYSLER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thread_class2A A
thread_length1.500 INCHES MINIMUM IN
hardness_rating29.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL
style_designatorSQUARE BEND
thread_directionRIGHT-HAND
nominal_thread_diameter0.562 INCHES IN
thread_quantity_per_inch18
thread_series_designatorUNF
inside_distance_between_shanks2.094 INCHES NOMINAL IN
material_document_and_classificationMIL-S-13048 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
distance_from_inside_center_of_bend_to_bolt_end9.250 INCHES NOMINAL IN
NSN5306-00-737-6831
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1263586 · 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
•
HARDNESS RATING: 29.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL
•
THREAD SERIES DESIGNATOR: UNF
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: SQUARE BEND
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-13048 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD QUANTITY PER INCH: 18
•
THREAD CLASS: 2A A
•
INSIDE DISTANCE BETWEEN SHANKS: 2.094 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HARDNESS RATING29.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL
THREAD SERIES DESIGNATORUNF
MATERIALSTEEL OVERALL
STYLE DESIGNATORSQUARE BEND
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-13048 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD QUANTITY PER INCH18
THREAD CLASS2A A
INSIDE DISTANCE BETWEEN SHANKS2.094 INCHES NOMINAL IN
THREAD LENGTH1.500 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.562 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
37654843-001Interchangeable
interchangeable cross-reference
interchangeable
737683-1Interchangeable
interchangeable cross-reference
interchangeable
SNC54170J00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1263586?
1263586 is a BOLT,U.
What parts can replace 1263586?
There are 3 known substitutes for 1263586: 37654843-001, 737683-1, SNC54170J00. Substitute compatibility should be verified for your specific system.
Is 1263586 still available?
1263586 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026