PartsTable
Technical Data Sheet
PartsTable / COMPONENT / C3198-5-6
C3198-5-6 ✓ 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: 0.365 INCHES MINIMUM AND 0.385 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 5325-00-020-3607, 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
C3198-5-6
NSN: 5325-00-020-3607
FSC: 5325
CAGE: 81755 — LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN AERONAUTICS COMPANY (USA)
SPECIFICATIONS
diameter0.441 INCHES NOMINAL IN
materialSTEEL COMP 8740 OVERALL
drive_typeSOCKET
grip_length0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
minor_diameter0.272 INCHES NOMINAL IN
extension_length0.361 INCHES NOMINAL IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
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_thickness0.322 INCHES MINIMUM AND 0.383 INCHES MAXIMUM IN
material_document_and_classificationAMS 6322 ASSN STD 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
NSN5325-00-020-3607
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: C3198-5-6 · 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
•
MATERIAL ACCOMMODATED THICKNESS: 0.322 INCHES MINIMUM AND 0.383 INCHES MAXIMUM IN
•
DIAMETER: 0.441 INCHES NOMINAL IN
•
MINOR DIAMETER: 0.272 INCHES NOMINAL IN
•
DRIVE TYPE: SOCKET
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6322 ASSN STD 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
•
EXTENSION LENGTH: 0.361 INCHES NOMINAL IN
•
STUD THREAD SIZE AND SERIES/TYPE DESIGNATOR: 0.190-32 UNF
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL ACCOMMODATED THICKNESS0.322 INCHES MINIMUM AND 0.383 INCHES MAXIMUM IN
DIAMETER0.441 INCHES NOMINAL IN
MINOR DIAMETER0.272 INCHES NOMINAL IN
DRIVE TYPESOCKET
TURNLOCK STUD SHANK STYLESTUD SHANK
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6322 ASSN STD 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OVERALL
EXTENSION LENGTH0.361 INCHES NOMINAL IN
STUD THREAD SIZE AND SERIES/TYPE DESIGNATOR0.190-32 UNF
GRIP LENGTH0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
TURNLOCK STUD HEAD STYLEFLAT COUNTERSUNK
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
4790Interchangeable
interchangeable cross-reference
interchangeable
4217DInterchangeable
interchangeable cross-reference
interchangeable
4790 PIECE 16Interchangeable
interchangeable cross-reference
interchangeable
1928-5-6Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy C3198-5-6?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is C3198-5-6?
C3198-5-6 is a STUD,TURNLOCK FASTENER.
What parts can replace C3198-5-6?
There are 4 known substitutes for C3198-5-6: 4790, 4217D, 4790 PIECE 16 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C3198-5-6?
C3198-5-6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-020-3607. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — C3198-5-6

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026