Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW
Magic with water and paint without the mess! It’s possible using this unique set by SES. Paint the card with a wet brush and watch the colour picture come to life. The brush is safe to use because the hairs cannot fall out.
Reusable after drying. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-021-3806, 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
1-4 421
NSN:5305-00-021-3806 FSC:5305 CAGE:55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
material
STEEL COMP 304 OVERALL
nut_style
HEXAGON
head_style
HEXAGON
nut_height
0.750 INCHES NOMINAL IN
head_height
0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
thread_class
2B
nominal_width
0.531 INCHES IN
thread_length
1.500 INCHES MAXIMUM IN
thread_series
UNF
surface_finish
125.0 MICROINCHES BOTH ENDS
fastener_length
1.500 INCHES NOMINAL IN
first_end_style
SQUARE
NSN
5305-00-021-3806
COMPONENT DIAGRAM
KEY FEATURES
•
FASTENER LENGTH: 1.500 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
MATERIAL: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
WIDTH BETWEEN FLATS: 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 13
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH
1.500 INCHES NOMINAL IN
THREAD DIRECTION
RIGHT-HAND
MATERIAL DOCUMENT AND CLASSIFICATION
66 FED STD ALL MATERIAL RESPONSES OVERALL
MATERIAL
STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
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FREQUENTLY ASKED QUESTIONS
What is 1-4 421?
1-4 421 is a RECTIFIER,SEMICONDUCTOR DEVICE manufactured by SES Creative.
What parts can replace 1-4 421?
There are 30 known substitutes for 1-4 421: 642A694-038, 16117, 16179 and 27 more. Substitute compatibility should be verified for your specific system.
Is 1-4 421 still available?
1-4 421 is currently cancelled.
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