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186682 — STUD,PLAIN

✓ Government record, cited
Hama · BOLT SCREW
PRODUCT OVERVIEW

186682: STUD,PLAIN.

The STUD,PLAIN is a Hama industrial component. Key specifications include material: STEEL COMP 8740 OR STEEL COMP 4137 OR STEEL COMP 4140, thread_class: 3A STUD THREAD A, thread_length: 0.562 INCHES MINIMUM NUT THREAD IN, overall_length: 1.312 INCHES NOMINAL IN, hardness_rating: 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM, surface_treatment: CADMIUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-018-6682, 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
186682
NSN: 5306-00-018-6682
NIINs: 000186682, 002076822
FSC: 5306 — Bolts
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 8740 OR STEEL COMP 4137 OR STEEL COMP 4140
thread_class3A STUD THREAD A
thread_length0.562 INCHES MINIMUM NUT THREAD IN
overall_length1.312 INCHES NOMINAL IN
hardness_rating32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.250 INCHES NUT THREAD IN
thread_pitch_diameters+0.2235 TO 0.2251 INCHES NUT THREAD IN
thread_quantity_per_inch28 STUD THREAD
thread_series_designatorUNS NUT THREAD
material_document_and_classificationAMS 6322 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6324 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6380 ASSN STD 2ND MATERIAL RESPONSE OR AMS 6382 ASSN STD 3RD MATERIAL RESPONSE
NSN5306-00-018-6682
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 186682 · Hama ⚠ 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
•
HEAD HEIGHT: 0.308 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.000 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 1.250 INCHES MINIMUM IN
•
HARDNESS RATING: 95.0 ROCKWELL B MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: FF-B-575,GR 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
FEATURES PROVIDED: UNFINISHED HEAD
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.308 INCHES MINIMUM AND 0.348 INCHES MAXIMUM IN
FASTENER LENGTH2.000 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
THREAD LENGTH1.250 INCHES MINIMUM IN
HARDNESS RATING95.0 ROCKWELL B MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONFF-B-575,GR 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES IN
FEATURES PROVIDEDUNFINISHED HEAD
HEAD STYLESQUARE
THREAD DIRECTIONRIGHT-HAND
SUBSTITUTES & CROSS-REFERENCES 4
MS35355-127Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
FF-B-575Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
FF-B-575 TY1Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
K1628Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 186682?
186682 is a STUD,PLAIN manufactured by Hama.
What parts can replace 186682?
There are 4 known substitutes for 186682: MS35355-127, FF-B-575, FF-B-575 TY1 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 186682?
186682 is cataloged in the U.S. Government catalog under NSN 5306-00-018-6682. 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.