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PartsTable / COMPONENT / A158984
A158984 ✓ 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,MACHINE is a the manufacturer industrial component. Key specifications include head_style: FLAT CHAMFER, head_height: 0.156 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.250 INCHES NOMINAL IN, hole_diameter: 0.047 INCHES NOMINAL IN, thread_length: 0.344 INCHES MINIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-637-1471, 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
A158984
NSN: 5305-00-637-1471
FSC: 5305
CAGE: 00000
SPECIFICATIONS
head_styleFLAT CHAMFER
head_height0.156 INCHES NOMINAL IN
thread_class3A A
head_diameter0.250 INCHES NOMINAL IN
hole_diameter0.047 INCHES NOMINAL IN
hole_quantity1
thread_length0.344 INCHES MINIMUM IN
screw_materialSTEEL CORROSION RESISTING
fastener_length0.375 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.164 INCHES IN
NSN5305-00-637-1471
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: A158984 · 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: 0.375 INCHES NOMINAL IN
•
HEAD HOLE CONFIGURATION STYLE: ROUND
•
HOLE QUANTITY: 1
•
HEAD STYLE: FLAT CHAMFER
•
THREAD QUANTITY PER INCH: 32
•
SCREW MATERIAL: STEEL CORROSION RESISTING
•
THREAD CLASS: 3A A
•
INTERNAL DRIVE STYLE: SLOT
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH0.375 INCHES NOMINAL IN
HEAD HOLE CONFIGURATION STYLEROUND
HOLE QUANTITY1
HEAD STYLEFLAT CHAMFER
THREAD QUANTITY PER INCH32
SCREW MATERIALSTEEL CORROSION RESISTING
THREAD CLASS3A A
INTERNAL DRIVE STYLESLOT
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
114-336Interchangeable
interchangeable cross-reference
interchangeable
11558Interchangeable
interchangeable cross-reference
interchangeable
590-060Interchangeable
interchangeable cross-reference
interchangeable
211558Interchangeable
interchangeable cross-reference
interchangeable
BDM211558EAInterchangeable
interchangeable cross-reference
interchangeable
1407Interchangeable
Intel Pentium 1407 DC 2.80GHz 5MB
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A158984?
A158984 is a SCREW,MACHINE.
What parts can replace A158984?
There are 17 known substitutes for A158984: 114-336, 11558, 590-060 and 14 more. Substitute compatibility should be verified for your specific system.
Is A158984 still available?
A158984 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026