Cut Sheet
Effective September, 2005
Copyright 2005 
PAGE 4
800-621-1506
www.appletonelec.com
I-4
I
Unions: UNY, UNF, and UNL;
Explosionproof, Dust-Ignitionproof
UNILETS
®
 for use with Threaded Metal Conduit
Class I, Div. 1 and 2
Groups A
‡
,B
◆
,C,D
Class II, Div. 1 and 2
Groups E,F,G
Class III
      Catalog Number
    Dimen. in  Dimen. in 
 Size Inches  Millimeters Steel (1/2” to 1”) and  Aluminum
  (Inches)  A  B  A  B  Malleable (1-1/4” to 6”)  (1/2” to 4”)
  UNY Unions
  For connecting conduit to enclosure
  Male/Female (Nipple Not Removable)
 1/2 2.14 1.47 54.4 37.3 UNY50NR
‡
  UNY50NR-A
‡
 3/4-1/2† 2.16 1.47 54.8 37.3 UNY75-50NR
‡
    UNY75-50NR-A
‡
 3/4 2.16 1.75 54.8 44.5 UNY75NR
‡
  UNY75NR-A
‡
 1 2.62 2.00 66.7 50.8 UNY100NR
‡
  UNY100NR-A
‡
  Male/Female (Removable Male Nipple)
 1-1/4 3.13 2.81 79.4 71.4 UNY125NR
◆
  UNY125NR-A
◆
 1-1/2 3.25 3.06 82.6 77.8 UNY150NR
◆
  UNY150NR-A
◆
 2 3.63 3.72 92.1 94.5 UNY200NR
◆
  UNY200NR-A
◆
 2-1/2 4.81 4.88 122.2 123.8 UNY250R
◆
  UNY250R-A
◆
 3 4.81 5.38 122.2 136.5 UNY300R
◆
  UNY300R-A
◆
 3-1/2 4.94 5.88 125.4 149.2 UNY350R
◆
  UNY350R-A
◆
 4 5.13 6.44 130.2 163.5 UNY400R
◆
  UNY400R-A
◆
 5 5.63 8.33 142.9 212.7 UNY500R
 6 5.75 9.63 146.1 244.5 UNY600R
  UNF Female Unions
  For connecting conduit to conduit
 1/2 1.47 1.47 37.3 37.3 UNF50NR
‡
  UNF50NR-A
‡
 3/4-1/2† 1.47 1.47 37.3 37.3 UNF75-50NR
‡
  UNF75-50NR-A
‡
 3/4 1.47 1.75 37.3 44.5 UNF75NR
‡
  UNF75NR-A
‡
 1 1.72 2.00 43.7 50.8 UNF100NR
‡
  UNF100NR-A
‡
 1-1/4 2.19 2.81 55.6 71.4 UNF125NR
◆
  UNF125NR-A
◆
 1-1/2 2.19 3.06 55.6 77.8 UNF150NR
◆
  UNF150NR-A
◆
 2 2.31 3.72 58.7 94.5 UNF200NR
◆
  UNF200NR-A
◆
 2-1/2 3.38 4.88 85.7 123.8 UNF250R
◆
  UNF250R-A
◆
 3 3.38 5.38 85.7 136.5 UNF300R
◆
  UNF300R-A
◆
 3-1/2 3.38 5.88 85.7 149.2 UNF350R
◆
  UNF350R-A
◆
 4 3.50 6.44 88.9 163.5 UNF400R
◆
  UNF400R-A
◆
 5 3.88 8.38 98.4 212.7 UNF500R
 6 4.00 9.63 101.6 244.5 UNF600R
  UNL 90° Elbow Unions
  For connecting conduit to enclosure
 Male-Female  A  B  C  A  B  C
    1/2-1/2  2.44 1.38 1.75  62.0 35.1 44.5  UNL50N
‡
   1/2-3/4†  2.46  1.63  1.69  62.5  41.4  42.9  UNL50-75N
‡
   3/4-1/2†  1.94  1.38  1.50  49.3  35.1  38.1  UNL75-50N
‡
    3/4-3/4  2.03 1.63 1.56  51.6 41.4 39.6  UNL75N
‡
‡
 Indicates items in the shaded area which are U.L. Listed for Class I, Groups A,B,C & D; Class II, Groups E,F and G; and Class III.
◆ Indicated items in the shaded area which are U.L. Listed for Class I, Groups B,C and D; Class II, Groups E,F and G; and Class III.
† Male end given first.




