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Technical Data Sheet
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126J-540-SS — 126J-540-SS

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

126J-540-SS: 126J-540-SS.

The 126J-540-SS is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5325-01-457-4633, 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
126J-540-SS
NSN: 5325-01-457-4633
FSC: 5325 — Fastening Devices
CAGE: 72794 — SOUTHCO INC (USA)
SPECIFICATIONS
Part Number126J-540-SS
NSN5325-01-457-4633
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 126J-540-SS · 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
•
DRIVE TYPE: SLOTTED
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
DIAMETER: 0.553 INCHES NOMINAL IN
•
SHANK NECK LENGTH: 0.180 INCHES NOMINAL IN
•
TURNLOCK STUD HEAD STYLE: FLAT COUNTERSUNK
•
STUD SHANK MAJOR DIAMETER: 0.313 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
GRIP LENGTH: 0.400 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
DRIVE TYPESLOTTED
TURNLOCK STUD SHANK STYLESTUD SHANK
DIAMETER0.553 INCHES NOMINAL IN
SHANK NECK LENGTH0.180 INCHES NOMINAL IN
TURNLOCK STUD HEAD STYLEFLAT COUNTERSUNK
STUD SHANK MAJOR DIAMETER0.313 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
GRIP LENGTH0.400 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
FJ5-40SSReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 126J-540-SS?
126J-540-SS is a 126J-540-SS.
What parts can replace 126J-540-SS?
There is 1 known substitute for 126J-540-SS: FJ5-40SS. Substitute compatibility should be verified for your specific system.
What is the NSN for 126J-540-SS?
126J-540-SS is cataloged in the U.S. Government catalog under NSN 5325-01-457-4633. This indicates validated use in U.S. government and defense supply chains.
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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.