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AB520326 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

AB520326: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include head_style: UNDERCUT HEXAGON, grip_length: 1.110 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN, head_height: 0.155 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.298 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN, fastener_length: 1.438 INCHES MINIMUM AND 1.469 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-899-2503, 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
AB520326
NSN: 5306-00-899-2503
FSC: 5306 — Bolts
CAGE: 70127 — ABSCOA INDUSTRIES INC (USA)
SPECIFICATIONS
head_styleUNDERCUT HEXAGON
grip_length1.110 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN
head_height0.155 INCHES NOMINAL IN
thread_class2A A
thread_length0.298 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
fastener_length1.438 INCHES MINIMUM AND 1.469 INCHES MAXIMUM IN
special_featuresFURNISHED WITH ONE O RING AND ONE POLYTETRAFLUOROETHYLENE WASHER
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
nominal_thread_diameter0.190 INCHES IN
minimum_tensile_strength125000 POUNDS PER SQUARE INCH LBS
NSN5306-00-899-2503
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AB520326 · 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: 0.155 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.438 INCHES MINIMUM AND 1.469 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.298 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-624 FED SPEC ALL MATERIAL RESPONSES OVERALL
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
•
HEAD STYLE: UNDERCUT HEXAGON
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.155 INCHES NOMINAL IN
FASTENER LENGTH1.438 INCHES MINIMUM AND 1.469 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.298 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-624 FED SPEC ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEUNDERCUT HEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH1.110 INCHES MINIMUM AND 1.140 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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AB520326?
AB520326 is a BOLT,MACHINE.
What is the NSN for AB520326?
AB520326 is cataloged in the U.S. Government catalog under NSN 5306-00-899-2503. 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.