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National Stock Number (NSN) Output Data

NSN:
NIIN:
Item Name:
OPTICAL FLAT

Definition:

A FLAT, TRANSPARENT PIECE OF GLASS, GENERALLY OF FUSED QUARTZ, WITH ONE OR BOTH PRINCIPAL SURFACES POLISHED TO WITHIN A FEW MILLIONTHS OF AN INCH OF A TRUE PLANE. IT IS USED IN CONJUNCTION WITH A MONOCHROMATIC LIGHT SOURCE TO MEASURE THE FLATNESS OF PRECISION FINISHED SURFACES, AND TO DETERMINE THE DISTANCE AND PARALLELISM BETWEEN PRECISION FINISHED SURFACES BY COMPARISON WITH KNOWN STANDARDS. IN OPERATION THE FLAT IS SUPERIMPOSED, REFERENCE SURFACE DOWNWARD, ON THE PARTS UNDER TEST AND WHEN ILLUMINATED BY MONOCHROMATIC LIGHT THE RAYS REFLECTED FROM THE REFERENCE SURFACE ARE EITHER REINFORCED OR NEUTRALIZED BY THE RAYS REFLECTED FROM THE SURFACE UNDER TEST PRODUCING INTERFERENCE BANDS WHICH REVEAL ANY VARIATIONS IN THE THICKNESS OF THE FILM OF AIR BETWEEN SURFACE UNDER TEST AND THE FLAT. EXCLUDES OPTICAL PARALLELS.

Reference/Part Number

Part Number CAGE Status RNCC RNVC DAC RNAAC MSDS SADC
60710139-9 34860 A 3 2 1 ZZ

CAGE Information

Code Company
34860 NORTHROP GRUMMAN GUIDANCE AND ELECTR

Federal Supply Class

Title

MEASURING TOOLS, CRAFTSMEN'S

Inclusions:

INCLUDES CALIPERS; LEVELS; MICROMETERS; PLUMB BOBS; PRECISION TAPES; SQUARES; ANGLE GAGES; CENTER GAGES; DEPTH GAGES; DRAW GAGES; DRILL POINT GAGES; FILLET AND RADIUS GAGES; GLAZIERS' GAGES; HEIGHT GAGES (VERNIER); PLANER GAGES; RIVET SELECTOR GAGES; SAW TOOTH SET GAGES; SCREW PITCH GAGES; SURFACE GAGES; TELESCOPING GAGES; THICKNESS GAGES; TUBE BEAD GAGES; TUBE FLARE GAGES; TWIST DRILL GAGES; TWIST DRILL AND ROD GAGES; TWIST DRILL AND TAP GAGES; TAPER-WIRE-THICKNESS GAGES; WIRE GAGES; TOOL SETTING PLANER AND SHAPER GAGES; GAGE BLOCKS.

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AGAV END ITEM IDENTIFICATION OH-58D AHIP (ARMY HELICOPTER IMPROVEMENT PROGRAM), ROTARY WING AIRCRAFT

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60710139-9 , 607101399 , 5210-01-423-9340 , 5210014239340 , 014239340 , 60710139-9 ,