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PartsTable / COMPONENT / NASM24671-78
NASM24671-78 ✓ 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,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OR STEEL COMP XM-7 OVERALL, head_style: FLAT COUNTERSUNK, thread_class: 3A A, head_diameter: 0.872 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN, thread_length: 1.500 INCHES MINIMUM IN, surface_finish: 125.0 MICROINCHES OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-849-2853, 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
NASM24671-78
NSN: 5305-00-849-2853
FSC: 5305
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OR STEEL COMP XM-7 OVERALL
head_styleFLAT COUNTERSUNK
thread_class3A A
head_diameter0.872 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
thread_length1.500 INCHES MINIMUM IN
surface_finish125.0 MICROINCHES OVERALL
fastener_length2.000 INCHES NOMINAL IN
hardness_rating80.0 ROCKWELL B MINIMUM OVERALL
thread_directionRIGHT-HAND
countersink_angle82.0 DEGREES NOMINAL
width_across_flats0.312 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
NSN5305-00-849-2853
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: NASM24671-78 · 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
•
WIDTH ACROSS FLATS: 0.312 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
•
THREAD QUANTITY PER INCH: 13
•
HEAD DIAMETER: 0.872 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
COUNTERSINK ANGLE: 82.0 DEGREES NOMINAL
•
SURFACE FINISH: 125.0 MICROINCHES OVERALL
•
MATERIAL: STEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OR STEEL COMP XM-7 OVERALL
•
HARDNESS RATING: 80.0 ROCKWELL B MINIMUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH ACROSS FLATS0.312 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH13
HEAD DIAMETER0.872 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
HEAD STYLEFLAT COUNTERSUNK
COUNTERSINK ANGLE82.0 DEGREES NOMINAL
SURFACE FINISH125.0 MICROINCHES OVERALL
MATERIALSTEEL COMP 302 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 384 OR STEEL COMP XM-7 OVERALL
HARDNESS RATING80.0 ROCKWELL B MINIMUM OVERALL
MINIMUM YIELD STRENGTH30000 POUNDS PER SQUARE INCH LBS
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
51480Interchangeable
interchangeable cross-reference
interchangeable
FF-S-86 TYPE IVInterchangeable
interchangeable cross-reference
interchangeable
100A905078Interchangeable
interchangeable cross-reference
interchangeable
92197A244Interchangeable
interchangeable cross-reference
interchangeable
0.750-10UNC-3A2.250 LGInterchangeable
interchangeable cross-reference
interchangeable
845-4558721 ITEM 10Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NASM24671-78?
NASM24671-78 is a SCREW,CAP,SOCKET HEAD.
What parts can replace NASM24671-78?
There are 13 known substitutes for NASM24671-78: 51480, FF-S-86 TYPE IV, 100A905078 and 10 more. Substitute compatibility should be verified for your specific system.
Is NASM24671-78 still available?
NASM24671-78 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026