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LB58-8-30 — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

LB58-8-30: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 718 OVERALL, head_style: HEXAGON, grip_length: 1.875 INCHES MINIMUM AND 1.891 INCHES MAXIMUM IN, head_height: 0.251 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.4986 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-392-3404, 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
LB58-8-30
NSN: 5306-01-392-3404
FSC: 5306 — Bolts
CAGE: L4528 — LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC (CAN)
SPECIFICATIONS
materialNICKEL ALLOY 718 OVERALL
head_styleHEXAGON
grip_length1.875 INCHES MINIMUM AND 1.891 INCHES MAXIMUM IN
head_height0.251 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.4986 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM IN
thread_length0.670 INCHES NOMINAL IN
fastener_length2.551 INCHES MINIMUM AND 2.571 INCHES MAXIMUM IN
special_featuresFURNISHED WITH CASTELLATED NUT RETAINING ELEMENT; RETAINING ELEMENT SHALL BE RELEASED ONLY BY DEPRESSING PLUNGER LOCATED IN THREAD END OF BOLT
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_between_flats0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
NSN5306-01-392-3404
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: LB58-8-30 · 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
•
HEAD HEIGHT: 0.251 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.551 INCHES MINIMUM AND 2.571 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.670 INCHES NOMINAL IN
•
SHANK UNTHREADED HOLE DIAMETER: 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.251 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN
FASTENER LENGTH2.551 INCHES MINIMUM AND 2.571 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.670 INCHES NOMINAL IN
SHANK UNTHREADED HOLE DIAMETER0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM FIRST HOLE IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH1.875 INCHES MINIMUM AND 1.891 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 2
03A095-8-30Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AS402-8-30Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is LB58-8-30?
LB58-8-30 is a BOLT,CLOSE TOLERANCE.
What parts can replace LB58-8-30?
There are 2 known substitutes for LB58-8-30: 03A095-8-30, AS402-8-30. Substitute compatibility should be verified for your specific system.
What is the NSN for LB58-8-30?
LB58-8-30 is cataloged in the U.S. Government catalog under NSN 5306-01-392-3404. 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.