PartsTable
Technical Data Sheet
4-40X1-4RDHD ✓ 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: ROUND, head_height: 0.086 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.193 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN, thread_length: 0.200 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, screw_material: STEEL OR STEEL COMP 1010. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-151-3576, 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
4-40X1-4RDHD
NSN: 5305-00-151-3576
FSC: 5305
CAGE: 87308 — FARLEY METALS INC SOUTHERN SCREW DIV (USA)
SPECIFICATIONS
head_styleROUND
head_height0.086 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.193 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
thread_length0.200 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
screw_materialSTEEL OR STEEL COMP 1010
fastener_length0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.112 INCHES IN
screw_surface_treatmentCADMIUM
minimum_tensile_strength55000 POUNDS PER SQUARE INCH LBS
NSN5305-00-151-3576
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4-40X1-4RDHD · 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
SCREW MATERIAL: STEEL OR STEEL COMP 1010
HEAD DIAMETER: 0.193 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
HEAD STYLE: ROUND
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
THREAD DIRECTION: RIGHT-HAND
SCREW SURFACE TREATMENT: CADMIUM
FASTENER LENGTH: 0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SCREW MATERIALSTEEL OR STEEL COMP 1010
HEAD DIAMETER0.193 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
HEAD STYLEROUND
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
THREAD DIRECTIONRIGHT-HAND
SCREW SURFACE TREATMENTCADMIUM
FASTENER LENGTH0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-630 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-631 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-634 FED SPEC 2ND MATERIAL RESPONSE
THREAD QUANTITY PER INCH40
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
4-40 X 1/4Interchangeable
interchangeable cross-reference
interchangeable
FF-S-92B TY III ST 9CInterchangeable
interchangeable cross-reference
interchangeable
8734676-1Interchangeable
interchangeable cross-reference
interchangeable
FFS92ANDTYPE1ANDSTYLE1Interchangeable
interchangeable cross-reference
interchangeable
AN520C6-22Interchangeable
interchangeable cross-reference
interchangeable
29360-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4-40X1-4RDHD?
4-40X1-4RDHD is a SCREW,MACHINE.
What parts can replace 4-40X1-4RDHD?
There are 21 known substitutes for 4-40X1-4RDHD: 4-40 X 1/4, FF-S-92B TY III ST 9C, 8734676-1 and 18 more. Substitute compatibility should be verified for your specific system.
Is 4-40X1-4RDHD still available?
4-40X1-4RDHD is currently cancelled.
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