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Technical Data Sheet
L1-21 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

SOCKET,PLUG-IN ELECTRONIC COMPON. Key specifications include material: STEEL, thickness: 0.312 INCHES NOMINAL IN, body_style: TOP OR BOTTOM MOUNT W/MOLDED SADDLETOP OR BOTTOM MOUNT W/MOLDED SADDLE, thread_class: 2A2A, bore_diameter: 0.4370 INCHES NOMINAL IN, overall_width: 1.000 INCHES MAXIMUM1.000 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3040-00-120-4913, 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
L1-21
NSN: 3040-00-120-4913
FSC: 3040
CAGE: 00141 — ROLLER BEARING CO OF AMERICA, INC DIV PIC DESIGN (USA)
SPECIFICATIONS
materialSTEEL
thickness0.312 INCHES NOMINAL IN
body_styleTOP OR BOTTOM MOUNT W/MOLDED SADDLETOP OR BOTTOM MOUNT W/MOLDED SADDLE
thread_class2A2A
bore_diameter0.4370 INCHES NOMINAL IN
overall_width1.000 INCHES MAXIMUM1.000 INCHES MAXIMUM IN
overall_height6.665 INCHES NOMINAL IN
overall_length9.930 INCHES NOMINAL IN
mounting_methodTHREADED STUD(S)THREADED STUD(S)
outside_diameter1.250 INCHES NOMINAL IN
style_designatorROUND, SINGLE BOLT SECURED
thread_directionRIGHT-HANDRIGHT-HAND
NSN3040-00-120-4913
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SOCKET,PLUG-IN ELECTRONIC COMPON TITLE COMPONENT PN L1-21 MFR SOCKET,PLUG-IN ELECTRO
KEY FEATURES
OUTSIDE DIAMETER: 1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN
SURFACE TREATMENT: PASSIVATE
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 303 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 30303 ASSN STD SINGLE MATERIAL RESPONSE
STYLE DESIGNATOR: ROUND, SINGLE BOLT SECURED
MATERIAL: STEEL COMP 303
FURNISHED ITEMS AND QUANTITY: 1 SOCKET HEAD CAP SCREW
THICKNESS: 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN
NOMINAL THREAD SIZE: 0.164 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER1.219 INCHES MINIMUM AND 1.281 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 303 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 30303 ASSN STD SINGLE MATERIAL RESPONSE
STYLE DESIGNATORROUND, SINGLE BOLT SECURED
MATERIALSTEEL COMP 303
FURNISHED ITEMS AND QUANTITY1 SOCKET HEAD CAP SCREW
THICKNESS0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN
NOMINAL THREAD SIZE0.164 INCHES IN
SCREW THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
BORE DIAMETER0.4375 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
2057667Interchangeable
interchangeable cross-reference
interchangeable
2052667Interchangeable
interchangeable cross-reference
interchangeable
L-12-1Interchangeable
interchangeable cross-reference
interchangeable
10180356-1Interchangeable
interchangeable cross-reference
interchangeable
69422-2Interchangeable
interchangeable cross-reference
interchangeable
LL-21Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is L1-21?
L1-21 is a SOCKET,PLUG-IN ELECTRONIC COMPON.
What parts can replace L1-21?
There are 12 known substitutes for L1-21: 2057667, 2052667, L-12-1 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for L1-21?
L1-21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3040-00-120-4913. This indicates validated use in U.S. government and defense supply chains.
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