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4186703 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

4186703: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 1.590 INCHES MINIMUM AND 1.710 INCHES MAXIMUM IN, style_designator: INTERNALLY THREADED FULL LENGTH, width_across_flats: 0.750 INCHES NOMINAL IN, cross-sectional_shape: HEXAGON, right_counterbore_depth: 0.440 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-990-1431, 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
4186703
NSN: 5340-00-990-1431
NIINs: 009901431, 010327435
FSC: 5340 — Hardware, Commercial
CAGE: 96214 — RAYTHEON COMPANY DBA RAYTHEON (USA)
SPECIFICATIONS
length1.590 INCHES MINIMUM AND 1.710 INCHES MAXIMUM IN
style_designatorINTERNALLY THREADED FULL LENGTH
width_across_flats0.750 INCHES NOMINAL IN
cross-sectional_shapeHEXAGON
right_counterbore_depth0.440 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
NSN5340-00-990-1431
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 4186703 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MOUNTING FACILITY DIAMETER: 0.125 INCHES NOMINAL IN
•
MOUNTING METHOD: PIN(S)
•
THREAD LENGTH: 1.250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KNURLED NO. 2
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
SURFACE TREATMENT: UNABLE TO DECODE
•
THREAD CLASS: 3A A
TECHNICAL CHARACTERISTICS
MOUNTING FACILITY DIAMETER0.125 INCHES NOMINAL IN
MOUNTING METHODPIN(S)
THREAD LENGTH1.250 INCHES NOMINAL IN
STYLE DESIGNATORKNURLED NO. 2
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.190 INCHES IN
SURFACE TREATMENTUNABLE TO DECODE
THREAD CLASS3A A
THREAD QUANTITY PER INCH32
MATERIALUNABLE TO DECODE
SUBSTITUTES & CROSS-REFERENCES 2
NAS573Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
127-0032-004Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4186703?
4186703 is a STANDOFF,THREADED,SPACING.
What parts can replace 4186703?
There are 2 known substitutes for 4186703: NAS573, 127-0032-004. Substitute compatibility should be verified for your specific system.
What is the NSN for 4186703?
4186703 is cataloged in the U.S. Government catalog under NSN 5340-00-990-1431. 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.