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Technical Data Sheet
PartsTable / COMPONENT / 10858-103
10858-103 ✓ 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: 0.312 INCHES NOMINAL IN, material: STEEL COMP 1118 OVERALL, drive_type: SLOTTED, grip_length: 0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN, shank_neck_length: 0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN, surface_treatment: CADMIUM AND CHROMATE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-282-8131, 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
10858-103
NSN: 5325-00-282-8131
FSC: 5325
CAGE: 10138 — ASTRONAUTICS CORPORATION OF AMERICA (USA)
SPECIFICATIONS
diameter0.312 INCHES NOMINAL IN
materialSTEEL COMP 1118 OVERALL
drive_typeSLOTTED
grip_length0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
shank_neck_length0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
end_item_identificationHELICOPTER, SEARCH AND RESCUE, HH-60H; AIRCRAFT, C-2A (REPROCURED); HELICOPTER, MH-53E; HELICOPTER, / HH-53H PACE LOW; HELICOPTER, CARRIER BASED A
turnlock_stud_head_styleFLAT COUNTERSUNK
stud_shank_major_diameter0.182 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
turnlock_stud_shank_styleSTUD SHANK
material_accommodated_thickness0.165 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
NSN5325-00-282-8131
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 10858-103 · 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
•
SHANK NECK LENGTH: 0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
GRIP LENGTH: 0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
MATERIAL ACCOMMODATED THICKNESS: 0.165 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
•
STUD SHANK MAJOR DIAMETER: 0.182 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONHELICOPTER, SEARCH AND RESCUE, HH-60H; AIRCRAFT, C-2A (REPROCURED); HELICOPTER, MH-53E; HELICOPTER, / HH-53H PACE LOW; HELICOPTER, CARRIER BASED A
SHANK NECK LENGTH0.100 INCHES MINIMUM AND 0.110 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
GRIP LENGTH0.300 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
TURNLOCK STUD SHANK STYLESTUD SHANK
MATERIAL ACCOMMODATED THICKNESS0.165 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
STUD SHANK MAJOR DIAMETER0.182 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
DIAMETER0.312 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
6615GInterchangeable
interchangeable cross-reference
interchangeable
318262Interchangeable
interchangeable cross-reference
interchangeable
5405Interchangeable
interchangeable cross-reference
interchangeable
373458Interchangeable
interchangeable cross-reference
interchangeable
AJ330Interchangeable
interchangeable cross-reference
interchangeable
AJ3-30CADPLInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10858-103?
10858-103 is a STUD,TURNLOCK FASTENER.
What parts can replace 10858-103?
There are 12 known substitutes for 10858-103: 6615G, 318262, 5405 and 9 more. Substitute compatibility should be verified for your specific system.
Is 10858-103 still available?
10858-103 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