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S11018 — STUD,2.25 LENGTH

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

S11018: STUD,2.25 LENGTH.

The STUD,2.25 LENGTH is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, overall_length: 2.250 INCHES NOMINAL IN, overall_diameter: 0.625 INCHES NOMINAL IN, special_features: MATL IS QQ-S-630, end_item_identification: KNOLLS ATOMIC POWER LAB SPECIAL PROJECT MAINTENANCE SYSTEM. This part is cataloged in the U.S.

Government catalog under NSN 5307-01-588-8997, 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
S11018
NSN: 5307-01-588-8997
NIINs: 015888997, 016408117
FSC: 5307 — Studs
CAGE: 8FGX3 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
overall_length2.250 INCHES NOMINAL IN
overall_diameter0.625 INCHES NOMINAL IN
special_featuresMATL IS QQ-S-630
end_item_identificationKNOLLS ATOMIC POWER LAB SPECIAL PROJECT MAINTENANCE SYSTEM
NSN5307-01-588-8997
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: S11018 · 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
•
OVERALL DIAMETER: 0.625 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.625 INCHES NOMINAL IN
OVERALL LENGTH2.250 INCHES NOMINAL IN
SPECIAL FEATURESMATL IS QQ-S-630
END ITEM IDENTIFICATIONKNOLLS ATOMIC POWER LAB SPECIAL PROJECT MAINTENANCE SYSTEM
MATERIALSTEEL CORROSION RESISTING
SUBSTITUTES & CROSS-REFERENCES 2
R89158X05020Reference document
Stud - 0.625 - 11 X 2.250
Reference document — Design control — primary reference
200138FPC614Reference document
Stud - 0.625 - 11 X 2.250
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 S11018?
S11018 is a STUD,2.25 LENGTH.
What parts can replace S11018?
There are 2 known substitutes for S11018: R89158X05020, 200138FPC614. Substitute compatibility should be verified for your specific system.
What is the NSN for S11018?
S11018 is cataloged in the U.S. Government catalog under NSN 5307-01-588-8997. This indicates validated use in U.S. government and defense supply chains.
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✓ 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.