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537AS629-3 — STANDOFF,THREADED,SPACING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

537AS629-3: STANDOFF,THREADED,SPACING.

The STANDOFF,THREADED,SPACING is a the manufacturer industrial component. Key specifications include thread_class: 2B RIGHT INTERNAL, thread_direction: RIGHT-HAND RIGHT INTERNAL, width_across_flats: 0.184 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN, nominal_thread_size: 0.112 INCHES RIGHT INTERNAL IN, cross-sectional_shape: HEXAGON, cross-sectional_length: 0.183 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-232-8495, 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
537AS629-3
NSN: 5340-01-232-8495
FSC: 5340 — Hardware, Commercial
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
thread_class2B RIGHT INTERNAL
thread_directionRIGHT-HAND RIGHT INTERNAL
width_across_flats0.184 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
nominal_thread_size0.112 INCHES RIGHT INTERNAL IN
cross-sectional_shapeHEXAGON
cross-sectional_length0.183 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN
thread_quantity_per_inch40 RIGHT INTERNAL
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD)
specification/standard_data80205-NAS1831 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NSN5340-01-232-8495
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 537AS629-3 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: 0.184 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
•
CROSS-SECTIONAL LENGTH: 0.183 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND RIGHT INTERNAL
•
NOMINAL THREAD SIZE: 0.112 INCHES RIGHT INTERNAL IN
•
SPECIFICATION/STANDARD DATA: 80205-NAS1831 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
CROSS-SECTIONAL SHAPE: HEXAGON
•
THREAD CLASS: 2B RIGHT INTERNAL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.184 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
CROSS-SECTIONAL LENGTH0.183 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND RIGHT INTERNAL
NOMINAL THREAD SIZE0.112 INCHES RIGHT INTERNAL IN
SPECIFICATION/STANDARD DATA80205-NAS1831 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
CROSS-SECTIONAL SHAPEHEXAGON
SPECIAL FEATURESMATERIAL: STEEL COMP 303 OR STEEL COMP 303SE OVERALL;MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 ASSN STD ALL MATERIAL RESPONSES OVERALL;SURFACE TREATMENT: PASSIVATE OVERALL;SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD CLASS2B RIGHT INTERNAL
THREAD QUANTITY PER INCH40 RIGHT INTERNAL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) LEFT INTERNAL (INCLUDES THRU THREAD)
SUBSTITUTES & CROSS-REFERENCES 8
10110184Reference document
Same NSN cross-reference
Reference document — Informative reference only
860314-57Reference document
Same NSN cross-reference
Reference document — Secondary reference
2504203-32Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
8101SS0440-7Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
2052-440-SS-20Reference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
SP440H3CReference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 537AS629-3?
537AS629-3 is a STANDOFF,THREADED,SPACING.
What parts can replace 537AS629-3?
There are 8 known substitutes for 537AS629-3: 10110184, 860314-57, 2504203-32 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 537AS629-3?
537AS629-3 is cataloged in the U.S. Government catalog under NSN 5340-01-232-8495. This indicates validated use in U.S. government and defense supply chains.
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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.