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Technical Data Sheet
PartsTable / COMPONENT / H22-598
H22-598 ✓ 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,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FILLISTER, head_height: 0.125 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.303 INCHES NOMINAL IN, thread_length: 0.375 INCHES MINIMUM 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 5306-00-496-4640, 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
H22-598
NSN: 5306-00-496-4640
FSC: 5306
CAGE: 98812 — AMERICAN INDUSTRIAL SALES (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFILLISTER
head_height0.125 INCHES NOMINAL IN
thread_class2A A
head_diameter0.303 INCHES NOMINAL IN
thread_length0.375 INCHES MINIMUM IN
fastener_length1.188 INCHES NOMINAL IN
thread_directionRIGHT-HAND
nominal_thread_diameter0.190 INCHES IN
first_diameter_from_head0.145 INCHES NOMINAL IN
thread_quantity_per_inch32
thread_series_designatorUNF
NSN5306-00-496-4640
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: H22-598 · 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
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
HEAD DIAMETER: 0.303 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.188 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.125 INCHES NOMINAL IN
•
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY: 1
•
MATERIAL: STEEL OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
HEAD STYLE: FILLISTER
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD DIAMETER0.303 INCHES NOMINAL IN
FASTENER LENGTH1.188 INCHES NOMINAL IN
HEAD HEIGHT0.125 INCHES NOMINAL IN
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY1
MATERIALSTEEL OVERALL
THREAD DIRECTIONRIGHT-HAND
HEAD STYLEFILLISTER
THREAD LENGTH0.375 INCHES MINIMUM IN
THREAD SERIES DESIGNATORUNF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
B107.8 TY1Interchangeable
interchangeable cross-reference
interchangeable
3819329Interchangeable
interchangeable cross-reference
interchangeable
B107.8Interchangeable
interchangeable cross-reference
interchangeable
756-5489Interchangeable
interchangeable cross-reference
interchangeable
301B398Interchangeable
interchangeable cross-reference
interchangeable
21081Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H22-598?
H22-598 is a BOLT,EXTERNALLY RELIEVED BODY.
What parts can replace H22-598?
There are 13 known substitutes for H22-598: B107.8 TY1, 3819329, B107.8 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for H22-598?
H22-598 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-496-4640. 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