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MIL-L-3661/12 — Technical Data Sheet

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— · 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

THREADING MACHINE,PIPE AND BOLT. Key specifications include material: PLASTIC LENS, thread_class: 2A A, thread_length: 0.562 INCHES NOMINAL IN, thread_series: UNS, overall_height: 0.719 INCHES NOMINAL IN, overall_length: 0.601 INCHES MINIMUM AND 0.636 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System under NSN 6210-00-023-7029, 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
MIL-L-3661/12
NSN: 6210-00-023-7029
FSC: 6210
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialPLASTIC LENS
thread_class2A A
thread_length0.562 INCHES NOMINAL IN
thread_seriesUNS
overall_height0.719 INCHES NOMINAL IN
overall_length0.601 INCHES MINIMUM AND 0.636 INCHES MAXIMUM IN
mounting_methodTHREAD
thread_diameter0.156 INCHES IN
thread_quantity32 PER INCH
effective_length0.423 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
overall_diameter0.469 INCHES NOMINAL IN
style_designatorSTOVEPIPE
NSN6210-00-023-7029
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available THREADING MACHINE,PIPE AND BOLT TITLE COMPONENT PN MIL-L-3661/12 MFR THREADING MACHINE,PIPE
KEY FEATURES
•
LIGHT TRANSMISSION DESIGN: TRANSLUCENT LENS
•
EFFECTIVE DIAMETER: 0.438 INCHES NOMINAL IN
•
MATERIAL: PLASTIC LENS
•
THREAD DIAMETER: 0.312 INCHES IN
•
THREAD CLASS: 2A A
•
SURFACE CONDITION: SMOOTH FACE
•
THREAD QUANTITY: 32 PER INCH
TECHNICAL CHARACTERISTICS
LIGHT TRANSMISSION DESIGNTRANSLUCENT LENS
EFFECTIVE DIAMETER0.438 INCHES NOMINAL IN
MATERIALPLASTIC LENS
THREAD DIAMETER0.312 INCHES IN
THREAD CLASS2A A
SURFACE CONDITIONSMOOTH FACE
SURFACE CONDITIONSMOOTH BACK
THREAD QUANTITY32 PER INCH
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUNEF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 40
177-0974-003InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LC12BTInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
RM120BTInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LC12CNInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MIL-L-3661/12(G REEN)InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
RM120GCInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-L-3661/12?
MIL-L-3661/12 is a THREADING MACHINE,PIPE AND BOLT.
What parts can replace MIL-L-3661/12?
There are 40 known substitutes for MIL-L-3661/12: 177-0974-003, LC12BT, RM120BT and 37 more. Substitute compatibility should be verified for your specific system.
Is MIL-L-3661/12 still available?
MIL-L-3661/12 is currently cancelled.
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Last verified: October 2026