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3D0100-4AF — STUD ASSEMBLY,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

3D0100-4AF: STUD ASSEMBLY,TURNLOCK FASTENER.

STUD ASSEMBLY,TURNLOCK FASTENER. Key specifications include material: STEEL COMP 4037 STUD, head_length: 1.050 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN, eyelet_length: 0.257 INCHES NOMINAL IN, stud_head_height: 1.990 INCHES NOMINAL IN, surface_treatment: CADMIUM AND CHROMATE OVERALL, stud_assembly_style: STUD ASSEMBLY. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-184-8404, 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
3D0100-4AF
NSN: 5325-01-184-8404
FSC: 5325 — Fastening Devices
CAGE: 88277 — THE BOEING COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 4037 STUD
head_length1.050 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN
eyelet_length0.257 INCHES NOMINAL IN
stud_head_height1.990 INCHES NOMINAL IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
stud_assembly_styleSTUD ASSEMBLY
eyelet_outside_diameter0.341 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
turnlock_stud_head_styleLOOP ON BELL
material_accommodated_thickness0.141 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN
material_document_and_classificationASTM A684 ASSN STD SINGLE MATERIAL RESPONSE EYELET
surface_treatment_document_and_classificationQQ-P-416, TY 2, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
distance_from_engaging_member_to_largest_bearing_surface_of_head0.505 INCHES NOMINAL IN
NSN5325-01-184-8404
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3D0100-4AF · 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 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HEAD LENGTH: 1.050 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN
•
EYELET OUTSIDE DIAMETER: 0.341 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
•
MATERIAL ACCOMMODATED THICKNESS: 0.141 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A331 ASSN STD SINGLE MATERIAL RESPONSE STUD
•
STUD HEAD HEIGHT: 1.990 INCHES NOMINAL IN
•
DISTANCE FROM ENGAGING MEMBER TO LARGEST BEARING SURFACE OF HEAD: 0.505 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TY 2, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HEAD LENGTH1.050 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN
EYELET OUTSIDE DIAMETER0.341 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
MATERIAL ACCOMMODATED THICKNESS0.141 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A331 ASSN STD SINGLE MATERIAL RESPONSE STUD
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A684 ASSN STD SINGLE MATERIAL RESPONSE EYELET
STUD HEAD HEIGHT1.990 INCHES NOMINAL IN
DISTANCE FROM ENGAGING MEMBER TO LARGEST BEARING SURFACE OF HEAD0.505 INCHES NOMINAL IN
TURNLOCK STUD HEAD STYLELOOP ON BELL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
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
40S47-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3D0100-4AF?
3D0100-4AF is a STUD ASSEMBLY,TURNLOCK FASTENER.
What parts can replace 3D0100-4AF?
There is 1 known substitute for 3D0100-4AF: 40S47-4. Substitute compatibility should be verified for your specific system.
What is the NSN for 3D0100-4AF?
3D0100-4AF is cataloged in the U.S. Government catalog under NSN 5325-01-184-8404. 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.