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P1491-M18-F16-1032 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

P1491-M18-F16-1032: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include length: 2.557 INCHES MINIMUM AND 2.567 INCHES MAXIMUM IN, material: PLASTIC POLYAMIDE NYLON OVERALL, thread_class: 2B RIGHT INTERNAL, thread_length: 0.500 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN, style_designator: LEFT INTERNAL AND RIGHT INTERNAL THREADS, thread_direction: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD). This part is cataloged in the U.S.

Government catalog under NSN 5340-01-437-1120, 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
P1491-M18-F16-1032
NSN: 5340-01-437-1120
FSC: 5340 — Hardware, Commercial
CAGE: 04729 — UNICORP. (USA)
SPECIFICATIONS
length2.557 INCHES MINIMUM AND 2.567 INCHES MAXIMUM IN
materialPLASTIC POLYAMIDE NYLON OVERALL
thread_class2B RIGHT INTERNAL
thread_length0.500 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN
style_designatorLEFT INTERNAL AND RIGHT INTERNAL THREADS
thread_directionRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
width_across_flats0.500 INCHES NOMINAL IN
nominal_thread_size0.190 INCHES RIGHT INTERNAL IN
cross-sectional_shapeSQUARE
thread_quantity_per_inch32 RIGHT INTERNAL
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD)
material_document_and_classificationL-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5340-01-437-1120
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: P1491-M18-F16-1032 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
•
WIDTH ACROSS FLATS: 0.500 INCHES NOMINAL IN
•
LENGTH: 2.557 INCHES MINIMUM AND 2.567 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.500 INCHES MINIMUM RIGHT INTERNAL IN
•
STYLE DESIGNATOR: LEFT INTERNAL AND RIGHT INTERNAL THREADS
•
MATERIAL DOCUMENT AND CLASSIFICATION: L-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
LENGTH2.557 INCHES MINIMUM AND 2.567 INCHES MAXIMUM IN
THREAD LENGTH0.500 INCHES MINIMUM RIGHT INTERNAL IN
THREAD LENGTH0.500 INCHES MINIMUM LEFT INTERNAL (INCLUDES THRU THREAD) IN
STYLE DESIGNATORLEFT INTERNAL AND RIGHT INTERNAL THREADS
MATERIAL DOCUMENT AND CLASSIFICATIONL-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD)
THREAD DIRECTIONRIGHT-HAND RIGHT INTERNAL
NOMINAL THREAD SIZE0.190 INCHES LEFT INTERNAL (INCLUDES THRU THREAD) IN
NOMINAL THREAD SIZE0.190 INCHES RIGHT INTERNAL IN
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 2
SC5365-0006Reference document
Same NSN cross-reference
Reference document — Secondary reference
SC5365-0006-1Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
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 P1491-M18-F16-1032?
P1491-M18-F16-1032 is a STANDOFF,THREADED,SPACING.
What parts can replace P1491-M18-F16-1032?
There are 2 known substitutes for P1491-M18-F16-1032: SC5365-0006, SC5365-0006-1. Substitute compatibility should be verified for your specific system.
What is the NSN for P1491-M18-F16-1032?
P1491-M18-F16-1032 is cataloged in the U.S. Government catalog under NSN 5340-01-437-1120. 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.