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Technical Data Sheet
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13588720-1 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

13588720-1: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, head_height: 0.078 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.250 INCHES NOMINAL IN, fastener_length: 0.625 INCHES NOMINAL IN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-473-6571, 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
13588720-1
NSN: 5306-01-473-6571
FSC: 5306 — Bolts
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
head_styleHEXAGON
head_height0.078 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
thread_class2A A
thread_length0.250 INCHES NOMINAL IN
fastener_length0.625 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_between_flats0.242 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
end_item_identification1425014424821
nominal_thread_diameter0.138 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5306-01-473-6571
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 13588720-1 · 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
•
HEAD HEIGHT: 0.078 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.625 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC 1ST TREATMENT RESPONSE AND MIL-L-46010,TYPEII MIL SPEC 2ND TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.250 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.242 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.078 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN
FASTENER LENGTH0.625 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC 1ST TREATMENT RESPONSE AND MIL-L-46010,TYPEII MIL SPEC 2ND TREATMENT RESPONSE OVERALL
THREAD LENGTH0.250 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.138 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.242 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS2A A
SUBSTITUTES & CROSS-REFERENCES 2
13495121-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIS-PRF-53016Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 13588720-1?
13588720-1 is a BOLT,MACHINE.
What parts can replace 13588720-1?
There are 2 known substitutes for 13588720-1: 13495121-1, MIS-PRF-53016. Substitute compatibility should be verified for your specific system.
What is the NSN for 13588720-1?
13588720-1 is cataloged in the U.S. Government catalog under NSN 5306-01-473-6571. This indicates validated use in U.S. government and defense supply chains.
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