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487991 — RECTIFIER ASSEMBLY,METALLIC

✓ Government record, cited
Legrand · ORING SEAL
PRODUCT OVERVIEW

487991: RECTIFIER ASSEMBLY,METALLIC.

The RECTIFIER ASSEMBLY,METALLIC is a Legrand industrial component. Key specifications include material: ALUMINUM RECTIFYING, overall_width: 12.500 INCHES NOMINAL IN, overall_length: 15.000 INCHES NOMINAL IN, first_leg_angle: 156.5 DEGREES NOMINAL, first_leg_style: CORNER RADIUS, first_leg_width: 5.331 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-075-2668, 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
487991
NSN: 5340-00-075-2668
NIINs: 000752668, 013611743
FSC: 5340 — Hardware, Commercial
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialALUMINUM RECTIFYING
overall_width12.500 INCHES NOMINAL IN
overall_length15.000 INCHES NOMINAL IN
first_leg_angle156.5 DEGREES NOMINAL
first_leg_styleCORNER RADIUS
first_leg_width5.331 INCHES NOMINAL IN
second_leg_styleEND RADIUS AND TAPERED
special_featuresFIRST LEG CONTAINS 6 MTG HOLES SPACED APPROX 0.950 IN. NOM C TO C ALONG WIDTH ON RADIUS OF 14.670 IN. NOM IN
style_designatorANGLE
second_leg_length1.240 INCHES NOMINAL IN
surface_treatmentCADMIUM
first_leg_thickness0.147 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN
NSN5340-00-075-2668
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 487991 MFR: Legrand ⚠ 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
•
SECOND LEG DISTANCE FROM EDGE TO HOLE CENTER ALONG LENGTH: 0.375 INCHES NOMINAL IN
•
FIRST LEG DISTANCE FROM EDGE TO HOLE CENTER ALONG LENGTH: 0.281 INCHES NOMINAL IN
•
FIRST LEG HOLE DIAMETER: 0.339 INCHES MINIMUM AND 0.349 INCHES MAXIMUM IN
•
FIRST LEG ANGLE: 156.5 DEGREES NOMINAL
•
SECOND LEG HOLE DIAMETER: 0.282 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS 2400 ASSN STD SINGLE TREATMENT RESPONSE
•
FIRST LEG CORNER RADIUS: 0.281 INCHES NOMINAL IN
•
SECOND LEG LENGTH: 1.240 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SECOND LEG DISTANCE FROM EDGE TO HOLE CENTER ALONG LENGTH0.375 INCHES NOMINAL IN
FIRST LEG DISTANCE FROM EDGE TO HOLE CENTER ALONG LENGTH0.281 INCHES NOMINAL IN
FIRST LEG HOLE DIAMETER0.339 INCHES MINIMUM AND 0.349 INCHES MAXIMUM IN
FIRST LEG ANGLE156.5 DEGREES NOMINAL
SECOND LEG HOLE DIAMETER0.282 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2400 ASSN STD SINGLE TREATMENT RESPONSE
FIRST LEG CORNER RADIUS0.281 INCHES NOMINAL IN
SECOND LEG LENGTH1.240 INCHES NOMINAL IN
STYLE DESIGNATORANGLE
FIRST LEG STYLECORNER RADIUS
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 487991?
487991 is a RECTIFIER ASSEMBLY,METALLIC manufactured by Legrand.
What is the NSN for 487991?
487991 is cataloged in the U.S. Government catalog under NSN 5340-00-075-2668. 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.