PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 1918-5-8
1918-5-8 ✓ 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 GEAR,SPUR is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, body_style: PLAIN, SOLID, bore_style: PLAIN BOTH ENDS, tooth_form: STANDARD, pitch_diameter: 0.6944 INCHES NOMINAL IN, pressure_angle: 20.0000 DEGREES. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-020-9708, 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
1918-5-8
NSN: 5325-00-020-9708
FSC: 5325
CAGE: 92215 — HOWMET GLOBAL FASTENING SYSTEMS INC DIV TORRANCE OPERATIONS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
body_stylePLAIN, SOLID
bore_stylePLAIN BOTH ENDS
tooth_formSTANDARD
pitch_diameter0.6944 INCHES NOMINAL IN
pressure_angle20.0000 DEGREES
teeth_quantity50
style_designatorPROTRUDING HUB
face_nominal_width0.125 INCHES IN
hub_nominal_diameter0.375 INCHES FIRST END IN
hub_style_designatorPINNED FIRST END
bore_nominal_diameter0.1873 INCHES BOTH ENDS IN
NSN5325-00-020-9708
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1918-5-8 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
GRIP LENGTH: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
MATERIAL: STEEL COMP 8740 OVERALL
•
STUD THREAD SIZE AND SERIES/TYPE DESIGNATOR: 0.190-32 UNIFIED NATIONAL JOINT FINE (UNJF)
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
STUD SHANK MAJOR DIAMETER: 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
•
EXTENSION LENGTH: 0.361 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
GRIP LENGTH0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MATERIALSTEEL COMP 8740 OVERALL
STUD THREAD SIZE AND SERIES/TYPE DESIGNATOR0.190-32 UNIFIED NATIONAL JOINT FINE (UNJF)
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
STUD SHANK MAJOR DIAMETER0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
EXTENSION LENGTH0.361 INCHES NOMINAL IN
TURNLOCK STUD HEAD STYLEFLAT FILLISTER
MATERIAL ACCOMMODATED THICKNESS0.447 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
191-858Interchangeable
interchangeable cross-reference
interchangeable
SM-C-763801-2Interchangeable
interchangeable cross-reference
interchangeable
SM-C-763801Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1918-5-8?
1918-5-8 is a GEAR,SPUR.
What parts can replace 1918-5-8?
There are 3 known substitutes for 1918-5-8: 191-858, SM-C-763801-2, SM-C-763801. Substitute compatibility should be verified for your specific system.
What is the NSN for 1918-5-8?
1918-5-8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-020-9708. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026