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Technical Data Sheet
PartsTable / COMPONENT / 5S28-8
5S28-8 ✓ 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 material: STEEL OVERALL, grip_length: 0.320 INCHES NOMINAL IN, surface_treatment: NICKEL OVERALL, turnlock_stud_head_style: FILLISTER WING, turnlock_stud_shank_style: STUD SHANK, material_accommodated_thickness: 0.125 INCHES MINIMUM AND 0.139 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-899-3586, 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
5S28-8
NSN: 5325-00-899-3586
FSC: 5325
CAGE: 71286 — HOWMET GLOBAL FASTENING SYSTEMS INC DIV CAMLOC PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
grip_length0.320 INCHES NOMINAL IN
surface_treatmentNICKEL OVERALL
turnlock_stud_head_styleFILLISTER WING
turnlock_stud_shank_styleSTUD SHANK
material_accommodated_thickness0.125 INCHES MINIMUM AND 0.139 INCHES MAXIMUM IN
material_document_and_classification5S28-8 MFR REF SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-N-290,TYPE 4 MFR REF SINGLE TREATMENT RESPONSE OVERALL
NSN5325-00-899-3586
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5S28-8 · 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-N-290,TYPE 4 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT: NICKEL OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: 5S28-8 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
TURNLOCK STUD HEAD STYLE: FILLISTER WING
•
MATERIAL ACCOMMODATED THICKNESS: 0.125 INCHES MINIMUM AND 0.139 INCHES MAXIMUM IN
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
GRIP LENGTH: 0.320 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-N-290,TYPE 4 MFR REF SINGLE TREATMENT RESPONSE OVERALL
MATERIALSTEEL OVERALL
SURFACE TREATMENTNICKEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION5S28-8 MFR REF SINGLE MATERIAL RESPONSE OVERALL
TURNLOCK STUD HEAD STYLEFILLISTER WING
MATERIAL ACCOMMODATED THICKNESS0.125 INCHES MINIMUM AND 0.139 INCHES MAXIMUM IN
TURNLOCK STUD SHANK STYLESTUD SHANK
GRIP LENGTH0.320 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
SC-B-69525Interchangeable
interchangeable cross-reference
interchangeable
50821Interchangeable
interchangeable cross-reference
interchangeable
HY-3280-3Interchangeable
interchangeable cross-reference
interchangeable
CS6822Interchangeable
interchangeable cross-reference
interchangeable
C10627-3Interchangeable
interchangeable cross-reference
interchangeable
50822Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5S28-8?
5S28-8 is a STUD,TURNLOCK FASTENER.
What parts can replace 5S28-8?
There are 9 known substitutes for 5S28-8: SC-B-69525, 50821, HY-3280-3 and 6 more. Substitute compatibility should be verified for your specific system.
Is 5S28-8 still available?
5S28-8 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026