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83204-12-1 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

83204-12-1: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: COBALT ALLOY OVERALL, head_style: DOUBLE HEXAGON EXTENDED WASHER, head_height: 0.711 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 0.245 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-253-3685, 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
83204-12-1
NSN: 5306-01-253-3685
FSC: 5306 — Bolts
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialCOBALT ALLOY OVERALL
head_styleDOUBLE HEXAGON EXTENDED WASHER
head_height0.711 INCHES NOMINAL IN
thread_class3A A
thread_length0.245 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length2.555 INCHES MINIMUM AND 2.585 INCHES MAXIMUM IN
shoulder_length1.190 INCHES MINIMUM AND 1.310 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.8425 INCHES MINIMUM AND 0.8430 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatmentPASSIVATE OVERALL
width_between_flats0.803 INCHES MINIMUM AND 0.814 INCHES MAXIMUM IN
NSN5306-01-253-3685
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 83204-12-1 · 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
•
EXTENDED WASHER THICKNESS: 0.178 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.711 INCHES NOMINAL IN
•
FASTENER LENGTH: 2.555 INCHES MINIMUM AND 2.585 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 1.190 INCHES MINIMUM AND 1.310 INCHES MAXIMUM FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 1.220 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN
•
SHOULDER DIAMETER: 0.8425 INCHES MINIMUM AND 0.8430 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.245 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.178 INCHES NOMINAL IN
HEAD HEIGHT0.711 INCHES NOMINAL IN
FASTENER LENGTH2.555 INCHES MINIMUM AND 2.585 INCHES MAXIMUM IN
SHOULDER LENGTH1.190 INCHES MINIMUM AND 1.310 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER1.220 INCHES MINIMUM AND 1.230 INCHES MAXIMUM IN
SHOULDER DIAMETER0.8425 INCHES MINIMUM AND 0.8430 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.245 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5844 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 83204-12-1?
83204-12-1 is a BOLT,SHOULDER.
What is the NSN for 83204-12-1?
83204-12-1 is cataloged in the U.S. Government catalog under NSN 5306-01-253-3685. 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.