Technical Information -

Technical Information

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Product Specifications Thread Specs (Pitch & Major Dia.) Torque Recommendations
PRODUCT SPECIFICATIONS

NYLON
Pressure rating:
150 PSIG (10 BAR) NEMA 4x, 6 (Submersible) & 12 - IP 68
Materials:
Fittings: Nylon 6/6, V0:
Flame resistant, halogen - and phosphor free, self extinguishing, non-toxic
O-Ring & Seal Ring: Buna-N/Polyethylene (Viton® optional)

[Applies to pages: 5, 6, 7, 8, 9, 10 & 11]

OPERATING TEMPERATURE
EXPOSURE STATIC DYNAMIC
CONTINUOUS
(NYLON & NICKEL PLATED BRASS)

-40°F to 212°F

(-40°C to 100°C)

-4°F to 176°F

(-20°C to 80°C)
SHORT TERM 248°F (120°C) 212°F (100°C)

NICKEL PLATED BRASS
Pressure rating:
150 PSIG (10 BAR) NEMA 4x, 6 (Submersible) & 12 - IP 68
Materials:
Body, Dome Nut:
Spring (Flex extension):
Splined Bushing & Form Seal:
Nickel Plated Brass
Stainless Steel
Nylon 6/6, V0: Flame resistant, halogen - and phosphor free, self extinguishing, non-toxic
O-Ring & Seal Ring: Buna-N/Polyethylene (Viton® optional)

[Applies to pages: 10, 11, 14, 15 & 16]

Selection Criteria For Strain Relief Fittings:

  1. Cable OD (Outside Diameter)

  2. Threads type & size

  3. Nylon, Brass, PVDF, or Stainless Steel

  4. Nut and/or O-Ring/Seal Ring
All approvals

Viton® is a federally registered trademark of DuPont Dow Elastomer.

THREAD SPECIFICATIONS (PITCH & MAJOR DIA.)

NPT THREAD SPECIFICATIONS
THREAD SIZE 1/4" NPT 3/8" NPT 1/2" NPT 3/4" NPT 1" NPT 1-1/4" NPT 1-1/2" NPT
MAJOR DIA.- INCHES (MM) .49" (12.5) .66" (16.8) .82" (20.8) 1.03" (26.2) 1.29" (32.8) 1.64" (41.6) 1.88" (47.8)
THREADS PER INCH 18 18 14 14 11.5 11.5 11.5

 

PG THREAD SPECIFICATIONS
THREAD SIZE PG 7* PG 9 PG 11 PG 13.5** PG 16 PG 21 PG 29 PG36 PG 42 PG48
MAJOR DIA.- INCHES (MM) .49" (12.5) .60" (15.2) .73" (18.6) .80" (20.4) .89" (22.5) 1.11" (28.3) 1.46" (37.0) 1.85" (47.0) 2.13" (54.0) 2.39" (59.3)
PITCH (MM) .05" (1.27) .055" (1.41) .055" (1.51) .055" (1.51) .055" (1.51) .062" (1.59) .062" (1.59) .062" (1.59) .062" (1.59) .062" (1.59)

 

METRIC THREAD SPECIFICATIONS
THREAD SIZE M6 M8 M12 M16 M20 M25 M32 M40 M50 M63
MAJOR DIA.- INCHES (MM) .24" (6) .31" (8) .47" (12) .63" (16) .79" (20) .98" (25) 1.26" (32) 1.57" (40) 1.97" (50) 2.48" (63)
PITCH (MM) .04" (1.0) .05" (1.25) .06" (1.5) .06" (1.5) .06" (1.5) .06" (1.5) .06" (1.5) .06" (1.5) .06" (1.5) .06" (1.5)
  

• * PG 7 thread fits 1/4" NPT or 1/2"-20 UNF.

•  ** PG 13.5 is also known as PG 13.

•  Taps are readily available. Call for sources and more detailed PG thread specifications.

TORQUE RECOMMENDATIONS FOR STRAIN RELIEF FITTINGS
Torque in inlb (Nm)

 

METAL STRAIN RELIEF FITTINGS

PLASTIC STRAIN RELIEF FITTINGS
DOME NUTS THREAD AND LOCK NUTS DOME NUTS THREAD AND LOCK NUTS
PG 7, M12x1.5 36.9      (4.17) 55.3     (6.25) 14.4      (1.62) 22.1      (2.50)
PG 9, PG 11, M16, PG 13.5, 3/8" NPT, 1/2" NPT, M16x1.5, M20x1.5 36.9      (4.17) 55.3     (6.25) 22.1      (2.50) 33.2       (3.75)
PG 16, 1/2"NPT-E 44.2     (5.00) 66.4      (7.50) 29.5       (3.33) 44.2      (5.00)

PG 21, PG 29, PG 36, PG 42, PG 48, 3/4"NPT, 1"NPT, 1-1/4"NPT, 1-1/2"NPT, M25x1.5, M32x1.5, M40x1.5, M50x1.5, M63x1.5

 59.0      (6.67) 88.5      (10.00) 44.2      (5.00) 66.4       (7.50)

Note: Torque for dome nuts was determined using a metal rod. It may vary for cable, depending on the crush resistance of the cable. We recommend to determine the actual torque empirically, testing the actual cable used. The values shown above are for reference only. 
Note: Nylon strain relief fittings installed in a threaded connection and exposed to elevated temperature should be retained with a sealant such as Locktite® to avoid a loose connection when temperature fluctuates.

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