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PartsTable / COMPONENT / GB511AB9-30
GB511AB9-30 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: DOUBLE HEXAGON EXTENDED WASHER, grip_length: 1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN, head_height: 0.590 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 1.025 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-063-9127, 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
GB511AB9-30
NSN: 5306-00-063-9127
FSC: 5306
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleDOUBLE HEXAGON EXTENDED WASHER
grip_length1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN
head_height0.590 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN
thread_class3A A
thread_length1.025 INCHES MAXIMUM IN
fastener_length2.885 INCHES MINIMUM AND 2.915 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
surface_treatmentCADMIUM OVERALL
width_between_flats0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
nominal_thread_diameter0.562 INCHES IN
NSN5306-00-063-9127
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: GB511AB9-30 · 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
•
WIDTH BETWEEN FLATS: 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
NOMINAL THREAD DIAMETER: 0.562 INCHES IN
•
THREAD CLASS: 3A A
•
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER: 2.590 INCHES MINIMUM AND 2.610 INCHES MAXIMUM FIRST HOLE IN
•
THREAD QUANTITY PER INCH: 18
•
FASTENER LENGTH: 2.885 INCHES MINIMUM AND 2.915 INCHES MAXIMUM IN
•
EXTENDED WASHER DIAMETER: 1.045 INCHES MINIMUM AND 1.055 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH BETWEEN FLATS0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.562 INCHES IN
THREAD CLASS3A A
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER2.590 INCHES MINIMUM AND 2.610 INCHES MAXIMUM FIRST HOLE IN
THREAD QUANTITY PER INCH18
FASTENER LENGTH2.885 INCHES MINIMUM AND 2.915 INCHES MAXIMUM IN
EXTENDED WASHER DIAMETER1.045 INCHES MINIMUM AND 1.055 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSPS-M-107,STANDARD PRESSED STEEL CO MFR REF SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORUNF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
57510Interchangeable
interchangeable cross-reference
interchangeable
881167-0001Interchangeable
interchangeable cross-reference
interchangeable
B57510Interchangeable
interchangeable cross-reference
interchangeable
2GL754Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is GB511AB9-30?
GB511AB9-30 is a BOLT,MACHINE.
What parts can replace GB511AB9-30?
There are 4 known substitutes for GB511AB9-30: 57510, 881167-0001, B57510 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for GB511AB9-30?
GB511AB9-30 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-063-9127. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026