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12505540-002 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

12505540-002: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: DOUBLE HEXAGON EXTENDED WASHER, head_height: 0.360 INCHES NOMINAL IN, thread_length: 1.750 INCHES NOMINAL IN, hardness_rating: 37.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-566-8263, 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
12505540-002
NSN: 5306-01-566-8263
FSC: 5306 — Bolts
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleDOUBLE HEXAGON EXTENDED WASHER
head_height0.360 INCHES NOMINAL IN
thread_length1.750 INCHES NOMINAL IN
hardness_rating37.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentOXIDE OVERALL
width_between_flats0.618 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN
end_item_identification2320-01-549-8565
nominal_thread_diameter0.625 INCHES IN
extended_washer_diameter0.921 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
minimum_tensile_strength170000 POUNDS PER SQUARE INCH LBS
NSN5306-01-566-8263
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12505540-002 · 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: 0.166 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.360 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-DTL-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 0.921 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.750 INCHES NOMINAL IN
•
HARDNESS RATING: 37.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
•
NOMINAL THREAD DIAMETER: 0.625 INCHES IN
•
HEAD STYLE: DOUBLE HEXAGON EXTENDED WASHER
TECHNICAL CHARACTERISTICS
EXTENDED WASHER THICKNESS0.166 INCHES NOMINAL IN
HEAD HEIGHT0.360 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-DTL-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER0.921 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
THREAD LENGTH1.750 INCHES NOMINAL IN
HARDNESS RATING37.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.625 INCHES IN
HEAD STYLEDOUBLE HEXAGON EXTENDED WASHER
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.618 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN
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
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12505540-002?
12505540-002 is a BOLT,MACHINE.
What is the NSN for 12505540-002?
12505540-002 is cataloged in the U.S. Government catalog under NSN 5306-01-566-8263. 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.