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HT239-6-30D — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

HT239-6-30D: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include head_style: FLAT COUNTERSUNK, grip_length: 1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN, head_diameter: 0.555 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN, thread_length: 0.365 INCHES MINIMUM AND 0.432 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-014-1199, 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
HT239-6-30D
NSN: 5305-01-014-1199
FSC: 5305 — Screws
CAGE: 73197 — HI-SHEAR CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 6150 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 4130 OVERALL
head_styleFLAT COUNTERSUNK
grip_length1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN
head_diameter0.555 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
thread_length0.365 INCHES MINIMUM AND 0.432 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES THREADS
fastener_length2.250 INCHES MINIMUM AND 2.297 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
countersink_angle100.0 DEGREES NOMINAL
surface_treatmentCADMIUM OVERALL
NSN5305-01-014-1199
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: HT239-6-30D · 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
•
SURFACE FINISH: 63.0 MICROINCHES GRIP
•
FASTENER LENGTH: 2.250 INCHES MINIMUM AND 2.297 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.365 INCHES MINIMUM AND 0.432 INCHES MAXIMUM IN
•
SHANK UNTHREADED HOLE DIAMETER: 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES GRIP
SURFACE FINISH63.0 MICROINCHES THREADS
FASTENER LENGTH2.250 INCHES MINIMUM AND 2.297 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.365 INCHES MINIMUM AND 0.432 INCHES MAXIMUM IN
SHANK UNTHREADED HOLE DIAMETER0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is HT239-6-30D?
HT239-6-30D is a SCREW,CLOSE TOLERANCE.
What is the NSN for HT239-6-30D?
HT239-6-30D is cataloged in the U.S. Government catalog under NSN 5305-01-014-1199. 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.