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3506-38-K3B — STUD,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

3506-38-K3B: STUD,TURNLOCK FASTENER.

The STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.335 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN, material: STEEL OVERALL, drive_type: SLOTTED, grip_length: 0.380 INCHES NOMINAL IN, stud_head_height: 0.062 INCHES NOMINAL IN, surface_treatment: CHROMATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-043-7379, 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
3506-38-K3B
NSN: 5325-01-043-7379
FSC: 5325 — Fastening Devices
CAGE: 72794 — SOUTHCO INC (USA)
SPECIFICATIONS
diameter0.335 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
materialSTEEL OVERALL
drive_typeSLOTTED
grip_length0.380 INCHES NOMINAL IN
stud_head_height0.062 INCHES NOMINAL IN
surface_treatmentCHROMATE OVERALL
stud_shank_major_diameter0.212 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
turnlock_stud_shank_styleSTUD SHANK
material_accommodated_thickness0.064 INCHES NOMINAL IN
surface_treatment_document_and_classificationMIL-C-14538 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5325-01-043-7379
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3506-38-K3B · 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: MIL-C-14538 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
DRIVE TYPE: SLOTTED
•
MATERIAL ACCOMMODATED THICKNESS: 0.064 INCHES NOMINAL IN
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
DIAMETER: 0.335 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
•
STUD HEAD HEIGHT: 0.062 INCHES NOMINAL IN
•
STUD SHANK MAJOR DIAMETER: 0.212 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CHROMATE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-14538 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
DRIVE TYPESLOTTED
MATERIAL ACCOMMODATED THICKNESS0.064 INCHES NOMINAL IN
TURNLOCK STUD SHANK STYLESTUD SHANK
DIAMETER0.335 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
STUD HEAD HEIGHT0.062 INCHES NOMINAL IN
STUD SHANK MAJOR DIAMETER0.212 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN
SURFACE TREATMENTCHROMATE OVERALL
MATERIALSTEEL OVERALL
GRIP LENGTH0.380 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES 1
PF3-1-2-38BLACKCHROMEMILC14538Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3506-38-K3B?
3506-38-K3B is a STUD,TURNLOCK FASTENER.
What parts can replace 3506-38-K3B?
There is 1 known substitute for 3506-38-K3B: PF3-1-2-38BLACKCHROMEMILC14538. Substitute compatibility should be verified for your specific system.
What is the NSN for 3506-38-K3B?
3506-38-K3B is cataloged in the U.S. Government catalog under NSN 5325-01-043-7379. 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.