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Technical Data Sheet
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248756 — Technical Data Sheet

✓ Government record, cited
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The ADAPTER,STRAIGHT,HOSE TO BOSS is a the manufacturer industrial component. Key specifications include diameter: 0.250 INCHES NOMINAL IN, material: RUBBER SILICONE CLASS Q CUSHION, overall_width: 1.400 INCHES NOMINAL IN, style_designator: HINGED & CENTER MTD, tongue_hole_type: ROUND, UNTHREADED, surface_treatment: ANODIZE BAND. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-103-3326, 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
248756
NSN: 4730-00-103-3326
NIINs: 001033326, 011606786
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 62555 — VACU-BLAST CORP (USA)
SPECIFICATIONS
diameter0.250 INCHES NOMINAL IN
materialRUBBER SILICONE CLASS Q CUSHION
overall_width1.400 INCHES NOMINAL IN
style_designatorHINGED & CENTER MTD
tongue_hole_typeROUND, UNTHREADED
surface_treatmentANODIZE BAND
material_thickness0.050 INCHES NOMINAL IN
loop_inside_diameter3.520 INCHES MINIMUM AND 3.570 INCHES MAXIMUM IN
cushioning_environmental_protectionHEAT
material_document_and_classificationZZR-765 CL 2B GR 70 FED SPEC SINGLE MATERIAL RESPONSE CUSHION
surface_treatment_document_and_classificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BAND
center_to_center_distance_between_loop_and_mounting_hole2.413 INCHES NOMINAL IN
NSN4730-00-103-3326
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 248756 · 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
•
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.875 INCHES FIRST END IN
•
NOMINAL OVERALL LENGTH: 1.625 INCHES IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66,AISI/SAE 4130 FED STD SINGLE MATERIAL RESPONSE OVERALL
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NOMINAL THREAD SIZE: 1.000 INCHES SECOND END IN
•
THREAD CLASS: 2A SECOND END A
•
THREAD QUANTITY PER INCH: 14 SECOND END
•
THREAD SERIES DESIGNATOR: UNS SECOND END
TECHNICAL CHARACTERISTICS
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.875 INCHES FIRST END IN
NOMINAL OVERALL LENGTH1.625 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66,AISI/SAE 4130 FED STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD SIZE1.000 INCHES SECOND END IN
THREAD CLASS2A SECOND END A
THREAD QUANTITY PER INCH14 SECOND END
THREAD SERIES DESIGNATORUNS SECOND END
SUBSTITUTES & CROSS-REFERENCES 1
GC502A56APPossible match (shared part number)
Possible match (shared part number)
Possible match (shared part number)
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 248756?
248756 is a ADAPTER,STRAIGHT,HOSE TO BOSS.
What parts can replace 248756?
There is 1 known substitute for 248756: GC502A56AP. Substitute compatibility should be verified for your specific system.
Is 248756 still available?
248756 is currently Unknown.
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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.