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HP1170C3-23A — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

HP1170C3-23A: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 718 OVERALL, head_style: FLAT COUNTERSUNK, grip_length: 1.427 INCHES MINIMUM AND 1.447 INCHES MAXIMUM IN, head_height: 0.046 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-478-2844, 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
HP1170C3-23A
NSN: 5305-01-478-2844
FSC: 5305 — Screws
CAGE: 0ZC92 — HEARTLAND PRECISION FASTENERS INC (USA)
SPECIFICATIONS
materialNICKEL ALLOY 718 OVERALL
head_styleFLAT COUNTERSUNK
grip_length1.427 INCHES MINIMUM AND 1.447 INCHES MAXIMUM IN
head_height0.046 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN
head_diameter0.293 INCHES MINIMUM AND 0.301 INCHES MAXIMUM IN
thread_length0.335 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN
fastener_length1.7725 INCHES MINIMUM AND 1.7925 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
internal_drive_styleTORX
NSN5305-01-478-2844
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: HP1170C3-23A · 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: 0.046 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.7725 INCHES MINIMUM AND 1.7925 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.335 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
SPLINE MAJOR DIAMETER: 0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.046 INCHES MAXIMUM IN
FASTENER LENGTH1.7725 INCHES MINIMUM AND 1.7925 INCHES MAXIMUM IN
THREAD LENGTH0.335 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SPLINE MAJOR DIAMETER0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH1.427 INCHES MINIMUM AND 1.447 INCHES MAXIMUM IN
GRIP DIAMETER0.1890 INCHES MINIMUM AND 0.1895 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 5
TX1027C3-23ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
TX1027D3-23AReference document
Same NSN cross-reference
Reference document — Secondary reference
11845-D3-23ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
3M1170-D3-23AReference document
Same NSN cross-reference
Reference document — Secondary reference
11825-D3-23ASame 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 HP1170C3-23A?
HP1170C3-23A is a SCREW,CLOSE TOLERANCE.
What parts can replace HP1170C3-23A?
There are 5 known substitutes for HP1170C3-23A: TX1027C3-23A, TX1027D3-23A, 11845-D3-23A and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for HP1170C3-23A?
HP1170C3-23A is cataloged in the U.S. Government catalog under NSN 5305-01-478-2844. 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.