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HT271A6-15 — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

HT271A6-15: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY UNS R54520 OVERALL, head_style: FLAT COUNTERSUNK UNDERCUT, grip_length: 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN, head_height: 0.115 INCHES MINIMUM AND 0.117 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.756 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-477-5616, 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
HT271A6-15
NSN: 5305-01-477-5616
FSC: 5305 — Screws
CAGE: 73197 — HI-SHEAR CORPORATION (USA)
SPECIFICATIONS
materialTITANIUM ALLOY UNS R54520 OVERALL
head_styleFLAT COUNTERSUNK UNDERCUT
grip_length0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
head_height0.115 INCHES MINIMUM AND 0.117 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.756 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
thread_length0.641 INCHES NOMINAL IN
thread_directionRIGHT-HAND
countersink_angle100.0 DEGREES NOMINAL
internal_drive_styleHIGH-TORQUE
end_item_identificationFIGHTER AIRCRAFT-FIRST (F18 E/F)
nominal_thread_diameter0.375 INCHES IN
NSN5305-01-477-5616
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: HT271A6-15 · 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: 0.115 INCHES MINIMUM AND 0.117 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.641 INCHES NOMINAL IN
•
CRITICALITY CODE JUSTIFICATION: AGAV
•
MATERIAL DOCUMENT AND CLASSIFICATION: NAS621 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK UNDERCUT
•
THREAD DIRECTION: RIGHT-HAND
•
GRIP LENGTH: 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.115 INCHES MINIMUM AND 0.117 INCHES MAXIMUM IN
THREAD LENGTH0.641 INCHES NOMINAL IN
CRITICALITY CODE JUSTIFICATIONAGAV
MATERIAL DOCUMENT AND CLASSIFICATIONNAS621 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEFLAT COUNTERSUNK UNDERCUT
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
INTERNAL DRIVE STYLEHIGH-TORQUE
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
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 5
HT8137-6-15ASSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
WC8137-6-15ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
110179-6-15ASSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
BM33024V6-15USame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST3M430V6-15ASSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 HT271A6-15?
HT271A6-15 is a SCREW,CLOSE TOLERANCE.
What parts can replace HT271A6-15?
There are 5 known substitutes for HT271A6-15: HT8137-6-15AS, WC8137-6-15A, 110179-6-15AS and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for HT271A6-15?
HT271A6-15 is cataloged in the U.S. Government catalog under NSN 5305-01-477-5616. 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.