Section C

Coupling Nuts / Hex Nuts

Inch Pouce

Écrous de raccord�/ Écrous hexagonaux

Not Plated STEEL

COUPLING NUTS For joining lengths of threaded rod end-to-end. Right-hand Threads.

ASME B18.2.2

DOUBLE THICKNESS NUTS (U.N.F.) FINE THREAD (FINISHED HIGH HEXAGON NUTS) THREADS are Unified Standard, Class 2B Fit

To be used with THREADED RODS - see pages B286-B290

C

ZINC PLATED STEEL

Size & Threads Per Inch

Width Across

PKG QTY.

SPAENAUR

Width

Flats Length

No.

C

C

PKG QTY.

SPAENAUR Nominal

Across Thick

10-24 UNC 5/16" 10-32 UNF 5/16" 1/4"-20 UNC 7/16" 1/4"-28 UNF 3/8" 5/16"-18 UNC 1/2" 5/16"-18 UNC 5/8" 5/16"-24 UNF 7/16" 3/8"-24 UNF 1/2" 3/8"-24 UNF 5/8" 7/16"-14 UNC 5/8" 7/16"-20 UNF 5/8" 1/2"-13 UNC 3/4" 1/2"-20 UNF 5/8"

3/4" 3/4" 7/8" 7/8"

50 50 50 50

155-301 155-300 155-302 155-359 155-303 155-376 155-360 155-304 155-361 155-362 155-305 155-363 155-381 155-306 155-364 155-365 155-377 155-307 155-366 155-024 155-308 155-367 155-309 155-368 155-310 155-369 155-311 155-312 155-370 155-341 155-371 155-351 155-352 155-353 155-354

Size Thread Flats ness Grade

No.

1/4"

28 7/16" 24 1/2" 24 9/16" 20 5/8" 20 3/4" 18 7/8"

3/8"

2 100 2 100

HN-249 HN-250 HN-70 HN-71 HN-72 HN-73 155-010 155-009

5/16"

29/64" 17/32" 39/64" 11/16" 49/64"

3/8"

5 5 8 8 8 8 8 8 2

25 25 25 25 25 25 15 15 15

1-3/4" 25 1-3/4" 25

7/16"

1/2"

7/8"

25

9/16"

3/8"-16 UNC 9/16" 1-3/4" 25

5/8" 3/4" 7/8"

18 15/16" 27/32" 16 1-1/16" 1" 14 1-1/4" 1-5/32" 14 1-7/16" 1-5/16" 12 1-7/8" 1-11/16"

155-P33-1N

1-1/8" 1-3/4" 1-3/4"

25 25 25

1"

HN-77 HN-78

1-1/4" 25

1-1/4"

1/2"-13 UNC 11/16" 1-3/4" 25

1-3/4" 1-1/4"

25 25

GRADE 2 STEEL - Not plated LEFT-HAND THREAD

1/2"-20 UNF 11/16" 1-3/4" 25 5/8"-11 UNC 13/16" 2-1/8" 15 5/8"-11 UNC 15/16" 2-1/8" 15 5/8"-18 UNF 13/16" 2-1/8" 15 3/4"-10 UNC 1" 3/4"-10 UNC 1-1/8" 2-1/4" 2-1/4" 15 7/8"-9 UNC 1-1/4" 2-1/2" 7/8"-14 UNF 1-1/4" 2-1/2" 10 1"-8 UNC 1-1/4" 2-1/2" 10 1"-14 UNF 1-3/8" 2-3/4" 5 15 15 10 3/4"-16 UNF 1" 2-1/4"

ASME B18.2.2

PKG QTY.

Thread Width A.F. Thickness

SPAENAUR No.

155-P21-1N 1/4"-20

7/16" 7/16" 7/16"

7/32" 5/32" 5/32" 17/64" 17/64" 21/64" 21/64" 7/16" 5/16" 39/64" 35/64" 41/64" 47/64" 27/64" 41/64" 55/64" 31/32" 1-7/32" 1-9/32" 1-1/2" 1-23/32" 3/8" 3/8" 3/4" 3/4"

100 100 100 100 100 100 100 100 100

1/4"-28 1/4"-28

155-P27-1A

*

155-450

155-P25-1M 5/16"-18 1/2"

5/16"-24 1/2"

155-328 * 155-326 * 155-329 * 155-327

3/8"-16 3/8"-24

9/16" 9/16"

7/16"-14 11/16" 7/16"-20 11/16"

155-340

1-1/8"-7 UNC 1-5/8" 1-1/4"-7 UNC 1-5/8" 1-1/4"-12 UNF 1-5/8" 1-1/2"-6 UNC 2" 1-1/2"-12 UNF 2"

3" 3" 3" 4"

5 1 1 1 1

155-P24-1W 1/2"-13

3/4" 3/4"

50 50 50 50 50 50 50 50 25 25 25 25 25 10

1/2"-20 5/8"-11 5/8"-18 3/4"-10 3/4"-10 3/4"-16 3/4"-16 7/8"-9 7/8"-14

155-026 * HN-241 * 155-314 155-347 * 155-358 * 155-429 * HN-232 HN-242

1-1/16" 15/16" 1-1/8" 1-1/4" 1-1/8" 1-1/8" 1-5/16" 1-5/16" 1-1/2"

3-1/2"

Zinc Plated Steel - LEFT-HAND Threads

3/8"-16 UNC 5/8"

1-3/4" 25

1/2"-13 UNC 11/16" 1-3/4" 25 5/8"-11 UNC 13/16" 2-1/8" 15

155-349 155-317 155-318

CATALOG 14 CATALOG 14.09

1"-8

3/4"-10 UNC 1" 2-1/4" 15 18-8 Stainless Steel - RIGHT-HAND Threads 155-P37-1M 1/4"-20 UNC 3/8" 7/8" 50 155-801 5/16"-18 UNC 7/16" 1" 25 155-P43-1Y 3/8"-16 UNC 1/2" 1-1/8" 25 155-P35-1K 1/2"-13 UNC 5/8" 1-1/4" 25 155-804 5/8"-11 UNC 7/8" 1-3/4" 10 155-805 3/4"-10 UNC 1" 2-1/4" 10 *

1-1/8"-7 1-11/16" 1-1/4"-7 2" 1-1/2"-6 2-1/4" 1-3/4"-5 2-5/8"

155-313 * 155-319

5 5

155-344 155-P34-1T

2"-4

3"

* Grade 5

Hex Jam Nut

Heavy Hex Nut

For Metric Coupling Nuts See page B293.

C5

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29 APR 2022