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Technical Data Sheet
PartsTable / COMPONENT / 178554-6
178554-6 ✓ 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: FILLISTER, head_height: 0.123 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.292 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN, hole_diameter: 0.046 INCHES NOMINAL IN, thread_length: 0.542 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-614-0245, 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
178554-6
NSN: 5305-00-614-0245
FSC: 5305
CAGE: 71791 — CURTISS-WRIGHT CONTROLS, INC. DBA CURTISS WRIGHT DIV ACTUATION DIVISION (USA)
SPECIFICATIONS
head_styleFILLISTER
head_height0.123 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.292 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN
hole_diameter0.046 INCHES NOMINAL IN
hole_quantity1
thread_length0.542 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
screw_materialSTEEL
fastener_length0.625 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleSLOT
nominal_thread_diameter0.190 INCHES IN
NSN5305-00-614-0245
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 178554-6 · 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 HOLE CONFIGURATION STYLE: ROUND LONGITUDINAL HOLE
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
FASTENER LENGTH: 0.625 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
•
HEAD HEIGHT: 0.123 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
•
THREAD CLASS: 2A A
•
THREAD QUANTITY PER INCH: 24
•
MINIMUM TENSILE STRENGTH: 55000 POUNDS PER SQUARE INCH LBS
TECHNICAL CHARACTERISTICS (FLIS)
HEAD HOLE CONFIGURATION STYLEROUND LONGITUDINAL HOLE
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
FASTENER LENGTH0.625 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD HEIGHT0.123 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
THREAD CLASS2A A
THREAD QUANTITY PER INCH24
MINIMUM TENSILE STRENGTH55000 POUNDS PER SQUARE INCH LBS
SCREW MATERIALSTEEL
THREAD LENGTH0.542 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
H2212PC31Interchangeable
interchangeable cross-reference
interchangeable
MIL S933Interchangeable
interchangeable cross-reference
interchangeable
19421Interchangeable
interchangeable cross-reference
interchangeable
FFS92Interchangeable
interchangeable cross-reference
interchangeable
AN500-10-10Interchangeable
interchangeable cross-reference
interchangeable
LS12906-63Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 178554-6?
178554-6 is a SCREW,MACHINE.
What parts can replace 178554-6?
There are 24 known substitutes for 178554-6: H2212PC31, MIL S933, 19421 and 21 more. Substitute compatibility should be verified for your specific system.
Is 178554-6 still available?
178554-6 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