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87643-2907 — SPACER,FLEXIBLE,PIPELINE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

87643-2907: SPACER,FLEXIBLE,PIPELINE.

The SPACER,FLEXIBLE,PIPELINE is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE CLASS CR, thickness: 0.200 INCHES NOMINAL IN, body_length: 2.100 INCHES NOMINAL IN, inside_width: 4.000 INCHES NOMINAL IN, flange_height: 1.500 INCHES NOMINAL IN, inside_length: 6.100 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-156-4920, 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
87643-2907
NSN: 4730-01-156-4920
NIINs: 011564920, 011792647, 011998190
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE CLASS CR
thickness0.200 INCHES NOMINAL IN
body_length2.100 INCHES NOMINAL IN
inside_width4.000 INCHES NOMINAL IN
flange_height1.500 INCHES NOMINAL IN
inside_length6.100 INCHES NOMINAL IN
outside_width17.000 INCHES NOMINAL IN
overall_length19.100 INCHES NOMINAL IN
inside_diameter17.000 INCHES NOMINAL IN
flange_thickness0.200 INCHES NOMINAL IN
outside_diameter20.000 INCHES NOMINAL IN
special_featuresFURNISHED WITH TWO CRES BACK-UP PLATES
NSN4730-01-156-4920
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 87643-2907 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
INSIDE WIDTH: 4.000 INCHES NOMINAL IN
•
INSIDE LENGTH: 10.000 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.200 INCHES NOMINAL IN
•
STYLE DESIGNATOR: RECTANGULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-R-6855, CLASS 2, GRADE 40 MIL SPEC SINGLE MATERIAL RESPONSE
•
BODY LENGTH: 2.100 INCHES NOMINAL IN
•
OUTSIDE WIDTH: 6.100 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
INSIDE WIDTH4.000 INCHES NOMINAL IN
INSIDE LENGTH10.000 INCHES NOMINAL IN
FLANGE THICKNESS0.200 INCHES NOMINAL IN
STYLE DESIGNATORRECTANGULAR
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-R-6855, CLASS 2, GRADE 40 MIL SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH12.100 INCHES NOMINAL IN
BODY LENGTH2.100 INCHES NOMINAL IN
OUTSIDE WIDTH6.100 INCHES NOMINAL IN
SPECIAL FEATURESFURNISHED WITH TWO CRES BACK-UP PLATES
MATERIALRUBBER CHLOROPRENE CLASS CR
SUBSTITUTES & CROSS-REFERENCES 2
2642-643-11Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
501-4675328-F104Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 87643-2907?
87643-2907 is a SPACER,FLEXIBLE,PIPELINE.
What parts can replace 87643-2907?
There are 2 known substitutes for 87643-2907: 2642-643-11, 501-4675328-F104. Substitute compatibility should be verified for your specific system.
What is the NSN for 87643-2907?
87643-2907 is cataloged in the U.S. Government catalog under NSN 4730-01-156-4920. 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.