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Technical Data Sheet
PartsTable / COMPONENT / 304790R1
304790R1 ✓ 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 SCREW,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_type: DRILLED, head_style: FILLISTER, head_height: 0.305 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.310 INCHES MINIMUM AND 0.315 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 5305-00-786-4028, 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
304790R1
NSN: 5305-00-786-4028
FSC: 5305
CAGE: 29510 — KOMATSU AMERICAN INTL CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_typeDRILLED
head_styleFILLISTER
head_height0.305 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.310 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
hole_diameter0.068 INCHES NOMINAL IN
hole_quantity2
thread_length0.466 INCHES MINIMUM AND 0.528 INCHES MAXIMUM IN
fastener_length0.843 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
NSN5305-00-786-4028
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 304790R1 · 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: 0.305 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
•
HOLE TYPE: DRILLED
•
HOLE DIAMETER: 0.068 INCHES NOMINAL IN
•
HEAD STYLE: FILLISTER
•
THREAD LENGTH: 0.466 INCHES MINIMUM AND 0.528 INCHES MAXIMUM IN
•
HOLE QUANTITY: 2
•
MATERIAL: STEEL OVERALL
•
THREAD QUANTITY PER INCH: 32
TECHNICAL CHARACTERISTICS (FLIS)
HEAD HEIGHT0.305 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN
HOLE TYPEDRILLED
HOLE DIAMETER0.068 INCHES NOMINAL IN
HEAD STYLEFILLISTER
THREAD LENGTH0.466 INCHES MINIMUM AND 0.528 INCHES MAXIMUM IN
HOLE QUANTITY2
MATERIALSTEEL OVERALL
THREAD QUANTITY PER INCH32
SECOND DIAMETER FROM HEAD0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN
HOLE CONFIGURATION STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
4105Interchangeable
interchangeable cross-reference
interchangeable
11532Interchangeable
interchangeable cross-reference
interchangeable
L57-1S1Interchangeable
interchangeable cross-reference
interchangeable
906532Interchangeable
interchangeable cross-reference
interchangeable
10582Interchangeable
interchangeable cross-reference
interchangeable
120 1/2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 304790R1?
304790R1 is a SCREW,EXTERNALLY RELIEVED BODY.
What parts can replace 304790R1?
There are 23 known substitutes for 304790R1: 4105, 11532, L57-1S1 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 304790R1?
304790R1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-786-4028. 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