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Technical Data Sheet
PartsTable / COMPONENT / L1590
L1590 ✓ 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: HEXAGON, grip_length: 0.438 INCHES NOMINAL IN, head_height: 0.250 INCHES NOMINAL IN, thread_length: 0.688 INCHES MINIMUM IN, fastener_length: 1.125 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-358-0209, 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
L1590
NSN: 5306-00-358-0209
FSC: 5306
CAGE: D9182 — ZF INDUSTRIEANTRIEBE WITTEN GMBH (DEU)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
grip_length0.438 INCHES NOMINAL IN
head_height0.250 INCHES NOMINAL IN
thread_length0.688 INCHES MINIMUM IN
fastener_length1.125 INCHES NOMINAL IN
hardness_rating35.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats0.438 INCHES NOMINAL IN
nominal_thread_diameter0.250 INCHES IN
minimum_tensile_strength170000 POUNDS PER SQUARE INCH LBS
NSN5306-00-358-0209
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: L1590 · 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: 0.438 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
HEAD HEIGHT: 0.250 INCHES NOMINAL IN
•
GRIP LENGTH: 0.438 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 28
•
HEAD STYLE: HEXAGON
•
FASTENER LENGTH: 1.125 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH BETWEEN FLATS0.438 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
HEAD HEIGHT0.250 INCHES NOMINAL IN
GRIP LENGTH0.438 INCHES NOMINAL IN
THREAD QUANTITY PER INCH28
HEAD STYLEHEXAGON
FASTENER LENGTH1.125 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
MINIMUM TENSILE STRENGTH170000 POUNDS PER SQUARE INCH LBS
FEATURES PROVIDEDFINISHED HEAD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
790-6RGInterchangeable
interchangeable cross-reference
interchangeable
92296Interchangeable
interchangeable cross-reference
interchangeable
21557Interchangeable
interchangeable cross-reference
interchangeable
A016Interchangeable
interchangeable cross-reference
interchangeable
13A27Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is L1590?
L1590 is a BOLT,MACHINE.
What parts can replace L1590?
There are 5 known substitutes for L1590: 790-6RG, 92296, 21557 and 2 more. Substitute compatibility should be verified for your specific system.
Is L1590 still available?
L1590 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026