1857870 — WINDOW,OBSERVATION

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

1857870: WINDOW,OBSERVATION.

The WINDOW,OBSERVATION is a the manufacturer industrial component. Key specifications include material: GLASS, edge_type: BEVELED, overall_width: 1.438 INCHES NOMINAL IN, overall_length: 3.859 INCHES NOMINAL IN, special_features: CORNERS 0.020 IN. X 45 DEG IN, style_designator: ROUNDED CORNERS.

This part is cataloged in the U.S. Government catalog under NSN 9340-01-270-3288, 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

1857870

NSN: 9340-01-270-3288
FSC: 9340 — Glass Fabricated Materials
CAGE: 03956 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)

SPECIFICATIONS

material	GLASS
edge_type	BEVELED
overall_width	1.438 INCHES NOMINAL IN
overall_length	3.859 INCHES NOMINAL IN
special_features	CORNERS 0.020 IN. X 45 DEG IN
style_designator	ROUNDED CORNERS
overall_thickness	0.199 INCHES NOMINAL IN
first_corner_radius	0.156 INCHES NOMINAL IN
third_corner_radius	0.156 INCHES NOMINAL IN
fourth_corner_radius	0.156 INCHES NOMINAL IN
second_corner_radius	0.156 INCHES NOMINAL IN
material_transparency	CLEAR
NSN	9340-01-270-3288

COMPONENT DIAGRAM

KEY FEATURES

•

FOURTH CORNER RADIUS: 0.156 INCHES NOMINAL IN

•

FIRST CORNER RADIUS: 0.156 INCHES NOMINAL IN

•

SECOND CORNER RADIUS: 0.156 INCHES NOMINAL IN

•

OVERALL THICKNESS: 0.199 INCHES NOMINAL IN

•

MATERIAL TRANSPARENCY: CLEAR

•

STYLE DESIGNATOR: ROUNDED CORNERS

TECHNICAL CHARACTERISTICS

FOURTH CORNER RADIUS	0.156 INCHES NOMINAL IN
FIRST CORNER RADIUS	0.156 INCHES NOMINAL IN
SECOND CORNER RADIUS	0.156 INCHES NOMINAL IN
OVERALL THICKNESS	0.199 INCHES NOMINAL IN
MATERIAL TRANSPARENCY	CLEAR
STYLE DESIGNATOR	ROUNDED CORNERS
OVERALL LENGTH	3.859 INCHES NOMINAL IN
OVERALL WIDTH	1.438 INCHES NOMINAL IN
EDGE TYPE	BEVELED
SPECIAL FEATURES	CORNERS 0.020 IN. X 45 DEG IN

OTHER ITEMS IN FSC 9340 — Glass Fabricated Materials

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

9340-00-001-2702 9340-00-001-3590 9340-00-001-3591 9340-00-001-3592 9340-00-003-0380 9340-00-003-1497 9340-00-003-1553 9340-00-003-7325

SUBSTITUTES & CROSS-REFERENCES 1

PL1891975 ITEM 6Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

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 1857870?

1857870 is a WINDOW,OBSERVATION.

What parts can replace 1857870?

There is 1 known substitute for 1857870: PL1891975 ITEM 6. Substitute compatibility should be verified for your specific system.

What is the NSN for 1857870?

1857870 is cataloged in the U.S. Government catalog under NSN 9340-01-270-3288. This indicates validated use in U.S. government and defense supply chains.

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1857870 — WINDOW,OBSERVATION

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