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Technical Data Sheet
PartsTable / COMPONENT / 3942
3942 ✓ 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

RESISTOR,VARIABLE,WIRE WOUND,NON. Key specifications include material: PLASTIC POLYCARBONATE, unit_type: BICUSPID, body_style: LOW OR MEDIUM PRESSURE (SCREWED), head_style: FLAT COUNTERSUNK, thread_class: 2A STUD THREAD A, head_diameter: 0.244 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-014-9247, 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
3942
NSN: 5305-00-014-9247
FSC: 5305
CAGE: 73734 — FEDERAL SCREW PRODUCTS, INC. (USA)
SPECIFICATIONS
materialPLASTIC POLYCARBONATE
unit_typeBICUSPID
body_styleLOW OR MEDIUM PRESSURE (SCREWED)
head_styleFLAT COUNTERSUNK
thread_class2A STUD THREAD A
head_diameter0.244 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN
overall_width0.750 INCHES NOMINAL IN
thread_length0.500 INCHES MINIMUM STUD THREAD IN
overall_height1.250 INCHES NOMINAL IN
overall_length3.000 INCHES NOMINAL IN
fastener_length0.500 INCHES NOMINAL IN
thread_locationMOUNTING FACILITY AND ELECTRICAL TERMINATION
NSN5305-00-014-9247
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3942 · 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
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
NONMACHINE NOMINAL THREAD DIAMETER: 0.138 INCHES IN
•
HEAD DIAMETER: 0.244 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
MATERIAL: COPPER ALLOY 260 OR COPPER ALLOY 268 OR COPPER ALLOY 270 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-613 ALLOY 260 1/4 H FED SPEC 1ST MATERIAL RESPONSE OR QQ-B-613 ALLOY 268 1/4 H FED SPEC 2ND MATERIAL RESPONSE OR QQ-B-626 ALLOY 260 1/4 H FED SPEC 1ST MATERIAL RESPONSE OR QQ-B-626 ALLOY 268 1/4 H FED SPEC 2ND MATERIAL RESPONSE OR QQ-W-321 ALLOY 260 1/4 H FED SPEC 1ST MATERIAL RESPONSE OR QQ-W-321 ALLOY 270 1/4 H FED SPEC 3RD MATERIAL RESPONSE OVERALL
•
FASTENER LENGTH: 0.500 INCHES NOMINAL IN
•
COUNTERSINK ANGLE: 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
NONMACHINE NOMINAL THREAD DIAMETER0.138 INCHES IN
HEAD DIAMETER0.244 INCHES MINIMUM AND 0.279 INCHES MAXIMUM IN
HEAD STYLEFLAT COUNTERSUNK
MATERIALCOPPER ALLOY 260 OR COPPER ALLOY 268 OR COPPER ALLOY 270 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-613 ALLOY 260 1/4 H FED SPEC 1ST MATERIAL RESPONSE OR QQ-B-613 ALLOY 268 1/4 H FED SPEC 2ND MATERIAL RESPONSE OR QQ-B-626 ALLOY 260 1/4 H FED SPEC 1ST MATERIAL RESPONSE OR QQ-B-626 ALLOY 268 1/4 H FED SPEC 2ND MATERIAL RESPONSE OR QQ-W-321 ALLOY 260 1/4 H FED SPEC 1ST MATERIAL RESPONSE OR QQ-W-321 ALLOY 270 1/4 H FED SPEC 3RD MATERIAL RESPONSE OVERALL
FASTENER LENGTH0.500 INCHES NOMINAL IN
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
NONMACHINE THREAD STYLEGIMLET POINT (TYPE A, AB OR BA)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
NL422W12-010Interchangeable
interchangeable cross-reference
interchangeable
MIL-I-23264/2Interchangeable
interchangeable cross-reference
interchangeable
39-42Interchangeable
interchangeable cross-reference
interchangeable
MILV16721Interchangeable
interchangeable cross-reference
interchangeable
394Interchangeable
interchangeable cross-reference
interchangeable
14459AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3942?
3942 is a RESISTOR,VARIABLE,WIRE WOUND,NON.
What parts can replace 3942?
There are 12 known substitutes for 3942: NL422W12-010, MIL-I-23264/2, 39-42 and 9 more. Substitute compatibility should be verified for your specific system.
Is 3942 still available?
3942 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