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2R21 — CONNECTOR,RECEPTACLE,ELECTRICAL

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

2R21: CONNECTOR,RECEPTACLE,ELECTRICAL.

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include diameter: 0.125 INCHES NOMINAL IN, material: STEEL, body_style: STRAIGHT SHAPE, POWER TYPE, construction: SEAMLESS, overall_width: 0.562 INCHES NOMINAL IN, terminal_type: TAB, SOLDER LUG SINGLE MATING END SINGLE CONTACT GROUPING. This part is cataloged in the U.S.

Government catalog under NSN 4710-00-101-1680, 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
2R21
NSN: 4710-00-101-1680
NIINs: 001011680, 011962090
FSC: 4710 — Pipe, Tube and Rigid Tubing
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
diameter0.125 INCHES NOMINAL IN
materialSTEEL
body_styleSTRAIGHT SHAPE, POWER TYPE
constructionSEAMLESS
overall_width0.562 INCHES NOMINAL IN
terminal_typeTAB, SOLDER LUG SINGLE MATING END SINGLE CONTACT GROUPING
overall_height1.094 INCHES NOMINAL IN
overall_length1.500 INCHES NOMINAL IN
wall_thickness0.028 INCHES NOMINAL IN
first_end_stylePLAIN
insert_materialPLASTIC PHENOLIC SINGLE MATING END
contact_materialCOPPER ALLOY SINGLE MATING END SINGLE CONTACT GROUPING
NSN4710-00-101-1680
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 2R21 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FIRST END STYLE: PLAIN
•
DIAMETER: 0.125 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: PLAIN ROUND
•
WALL THICKNESS: 0.028 INCHES NOMINAL IN
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
MATERIAL: STEEL
•
CONSTRUCTION: SEAMLESS
TECHNICAL CHARACTERISTICS
FIRST END STYLEPLAIN
DIAMETER0.125 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEPLAIN ROUND
WALL THICKNESS0.028 INCHES NOMINAL IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
MATERIALSTEEL
CONSTRUCTIONSEAMLESS
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2R21?
2R21 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What is the NSN for 2R21?
2R21 is cataloged in the U.S. Government catalog under NSN 4710-00-101-1680. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.