MIL-DTL-18240 Fastener Element, Self-Locking, Threaded Fastener, 250 Degrees F MaximumThis specification defines the requirements for self-locking elements for use in externally threaded fasteners such as bolts and screws to be used in fasteners with either UNC, UNJC, UNF, UNJF, UNRC or UNRF threads and where the temperatures will not exceed 250 deg. F.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20 - 21 - 22 - 23 - 24 - 25

MIL-DTL-18240F

TABLE VIII. Basic color limits for self-locking element.

BASIC COLOR

LIMITS

Per ASTM D1535

Blue

10.0B min., 8 Chroma min., 6 value min.

7.5PB max., 10 Chroma min., 4 value min.

2.5PB min., 10 Chroma min., 4 value min.

Green

10.0G max., 4 Chroma min., 4 value min.

7.5 G

4 Chroma min., 4 value min.

5.0 G min., 4 Chroma min., 4 value min.

Plum

5.0RP min., 8 Chroma min., 5 value max.

7.5RP

8 Chroma min., 5 value max.

10.0RP max., 8 Chroma min., 5 value max.

Yellow

10.0Y max., 2 Chroma min., 6 value min.

7.5 Y

2 Chroma min., 6 value min.

5.0 Y min., 2 Chroma min., 6 value min.

Red

10.0R max., 8 Chroma min., 5 value min.

7.5 R

8 Chroma min., 5 value min.

5.0 R min., 8 Chroma min., 5 value min.

White

N 9.5 max. / 90.0 % R

N 7.25.min / 46.8 % R

Brown

2.5YR min., 4 Chroma min., 4 value max.

5.0YR

4 Chroma min., 4 value max.

7.5YR max., 4 Chroma min., 4 value max.

(See QPL-18240 for current approved sources)