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PartsTable / COMPONENT / C3198-5-8
C3198-5-8 ✓ 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 STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.441 INCHES NOMINAL IN, material: STEEL COMP 8740 OVERALL, drive_type: SOCKET, grip_length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, minor_diameter: 0.272 INCHES NOMINAL IN, extension_length: 0.361 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-441-1406, 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
C3198-5-8
NSN: 5325-00-441-1406
FSC: 5325
CAGE: 16258 — SPACE-LOK, INC. DBA SPACE-LOK INC DIV SPACE-LOK (USA)
SPECIFICATIONS
diameter0.441 INCHES NOMINAL IN
materialSTEEL COMP 8740 OVERALL
drive_typeSOCKET
grip_length0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
minor_diameter0.272 INCHES NOMINAL IN
extension_length0.361 INCHES NOMINAL IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
securing_device_typeRING
turnlock_stud_head_styleFLAT COUNTERSUNK
stud_shank_major_diameter0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
turnlock_stud_shank_styleSTUD SHANK
material_accommodated_thickness0.486 INCHES MINIMUM AND 0.547 INCHES MAXIMUM IN
NSN5325-00-441-1406
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: C3198-5-8 · 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
•
TURNLOCK STUD HEAD STYLE: FLAT COUNTERSUNK
•
MATERIAL ACCOMMODATED THICKNESS: 0.486 INCHES MINIMUM AND 0.547 INCHES MAXIMUM IN
•
EXTENSION LENGTH: 0.361 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6322 ASSN STD 2ND MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 8740 OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
DRIVE TYPE: SOCKET
TECHNICAL CHARACTERISTICS (FLIS)
TURNLOCK STUD HEAD STYLEFLAT COUNTERSUNK
MATERIAL ACCOMMODATED THICKNESS0.486 INCHES MINIMUM AND 0.547 INCHES MAXIMUM IN
EXTENSION LENGTH0.361 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 6322 ASSN STD 2ND MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 8740 OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
DRIVE TYPESOCKET
SECURING DEVICE TYPERING
STUD THREAD SIZE AND SERIES/TYPE DESIGNATOR0.190-32 UNF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
1762BInterchangeable
interchangeable cross-reference
interchangeable
5063Interchangeable
interchangeable cross-reference
interchangeable
40700Interchangeable
interchangeable cross-reference
interchangeable
2AF931Interchangeable
interchangeable cross-reference
interchangeable
503-0365Interchangeable
interchangeable cross-reference
interchangeable
7400-36Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C3198-5-8?
C3198-5-8 is a STUD,TURNLOCK FASTENER.
What parts can replace C3198-5-8?
There are 7 known substitutes for C3198-5-8: 1762B, 5063, 40700 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C3198-5-8?
C3198-5-8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-441-1406. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026