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12561900-55 — SCREW,TAPPING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

12561900-55: SCREW,TAPPING.

The SCREW,TAPPING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON EXTENDED WASHER, head_height: 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN, fastener_length: 0.400 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN, surface_treatment: BLACK CHEMICAL FINISH OVERALL, width_between_flats: 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-696-2764, 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
12561900-55
NSN: 5305-01-696-2764
FSC: 5305 — Screws
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON EXTENDED WASHER
head_height0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
fastener_length0.400 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
surface_treatmentBLACK CHEMICAL FINISH OVERALL
width_between_flats0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
internal_drive_styleSLOT
end_item_identification2310-01-595-3986
nonmachine_thread_styleGIMLET POINT (TYPE A, AB OR BA)
extended_washer_diameter0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
extended_washer_thickness0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
nonmachine_nominal_thread_diameter0.250 INCHES IN
NSN5305-01-696-2764
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12561900-55 · 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
•
NONMACHINE NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
EXTENDED WASHER THICKNESS: 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.400 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: CAGE 19207, DWG 12469117 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
EXTENDED WASHER DIAMETER: 0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
•
NONMACHINE THREAD STYLE: GIMLET POINT (TYPE A, AB OR BA)
•
HEAD STYLE: HEXAGON EXTENDED WASHER
TECHNICAL CHARACTERISTICS
NONMACHINE NOMINAL THREAD DIAMETER0.250 INCHES IN
EXTENDED WASHER THICKNESS0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
HEAD HEIGHT0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
FASTENER LENGTH0.400 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONCAGE 19207, DWG 12469117 MFR REF SINGLE TREATMENT RESPONSE OVERALL
EXTENDED WASHER DIAMETER0.480 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
NONMACHINE THREAD STYLEGIMLET POINT (TYPE A, AB OR BA)
HEAD STYLEHEXAGON EXTENDED WASHER
WIDTH BETWEEN FLATS0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
SURFACE TREATMENTBLACK CHEMICAL FINISH OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
12561900Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 12561900-55?
12561900-55 is a SCREW,TAPPING.
What parts can replace 12561900-55?
There is 1 known substitute for 12561900-55: 12561900. Substitute compatibility should be verified for your specific system.
What is the NSN for 12561900-55?
12561900-55 is cataloged in the U.S. Government catalog under NSN 5305-01-696-2764. 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.