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HT239PB6-10 — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

HT239PB6-10: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, grip_diameter: 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN, head_diameter: 0.555 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN, fastener_length: 1.000 INCHES MINIMUM AND 1.047 INCHES MAXIMUM IN, part_name_assigned_by_controlling_agency: NAVY SPECIAL PROJECT. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-032-3956, 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
HT239PB6-10
NSN: 5305-00-032-3956
FSC: 5305 — Screws
CAGE: L4528 — LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC (CAN)
SPECIFICATIONS
head_styleFLAT COUNTERSUNK
grip_diameter0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN
head_diameter0.555 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
fastener_length1.000 INCHES MINIMUM AND 1.047 INCHES MAXIMUM IN
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5305-00-032-3956
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: HT239PB6-10 · 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: 1.000 INCHES MINIMUM AND 1.047 INCHES MAXIMUM IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
GRIP DIAMETER: 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN
•
HEAD DIAMETER: 0.555 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
FASTENER LENGTH1.000 INCHES MINIMUM AND 1.047 INCHES MAXIMUM IN
HEAD STYLEFLAT COUNTERSUNK
GRIP DIAMETER0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
HEAD DIAMETER0.555 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES 2
GB510L6-10Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
HT8043-6-10Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is HT239PB6-10?
HT239PB6-10 is a SCREW,CLOSE TOLERANCE.
What parts can replace HT239PB6-10?
There are 2 known substitutes for HT239PB6-10: GB510L6-10, HT8043-6-10. Substitute compatibility should be verified for your specific system.
What is the NSN for HT239PB6-10?
HT239PB6-10 is cataloged in the U.S. Government catalog under NSN 5305-00-032-3956. 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.