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PartsTable / COMPONENT / H538-10-7
H538-10-7 ✓ 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 ASSEMBLY,PANEL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 305 STAND-OFF, head_style: FLAT CHAMFER, head_height: 0.188 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.375 INCHES NOMINAL IN, fastener_length: 0.418 INCHES MINIMUM AND 0.458 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 5305-01-006-9417, 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
H538-10-7
NSN: 5305-01-006-9417
FSC: 5305
CAGE: 83014 — HARTWELL CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 305 STAND-OFF
head_styleFLAT CHAMFER
head_height0.188 INCHES NOMINAL IN
thread_class2A A
thread_length0.375 INCHES NOMINAL IN
fastener_length0.418 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN
special_featuresSPRING RETAINER CRES 17-7 PER MIL-S-25043
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_between_flats0.500 INCHES MINIMUM IN
internal_drive_styleSLOT
nominal_thread_diameter0.164 INCHES IN
NSN5305-01-006-9417
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: H538-10-7 · 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
•
FASTENER LENGTH: 0.418 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN
•
WIDTH BETWEEN FLATS: 0.500 INCHES MINIMUM IN
•
INTERNAL DRIVE STYLE: SLOT
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-W-423 COND B FED SPEC SINGLE MATERIAL RESPONSE SPRING
•
MATERIAL: STEEL COMP 305 STAND-OFF
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH0.418 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.500 INCHES MINIMUM IN
INTERNAL DRIVE STYLESLOT
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-423 COND B FED SPEC SINGLE MATERIAL RESPONSE SPRING
MATERIALSTEEL COMP 305 STAND-OFF
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
SPECIAL FEATURESSPRING RETAINER CRES 17-7 PER MIL-S-25043
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
70242Interchangeable
interchangeable cross-reference
interchangeable
52589-1Interchangeable
interchangeable cross-reference
interchangeable
A1800Interchangeable
interchangeable cross-reference
interchangeable
52589Interchangeable
interchangeable cross-reference
interchangeable
FA150-3/4INInterchangeable
interchangeable cross-reference
interchangeable
GS553C20Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is H538-10-7?
H538-10-7 is a SCREW ASSEMBLY,PANEL.
What parts can replace H538-10-7?
There are 6 known substitutes for H538-10-7: 70242, 52589-1, A1800 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for H538-10-7?
H538-10-7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-006-9417. 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