Cap nut SR1955
hexagonalnylon

Cap nut - SR1955 - Essentra Components - hexagonal / nylon
Cap nut - SR1955 - Essentra Components - hexagonal / nylon
Cap nut - SR1955 - Essentra Components - hexagonal / nylon - image - 2
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Characteristics

Types
cap, hexagonal
Material
nylon
Height

Max.: 22 mm
(0.866 in)

Min.: 6 mm
(0.236 in)

Width

Max.: 19 mm
(0.75 in)

Min.: 5.5 mm
(0.22 in)

Description

Product Details
Dome Nuts, also known as Cap Nuts and Acorn Nuts, are a type of nut that has a domed end on one side. As such, a Dome Nut is ideal for covering and protecting a bolt or screw in a wide range of applications. Made from Nylon 6/6, these Nylon Acorn Nuts not only protect the bolt threads under the nut, but also provide a tidy appearance. A Cap Nut may also improve safety on some joints and applications. When an assembly needs a smooth finish, or you wish to hide or disguise the fasteners and exposed threads of an application, Plastic Dome Nuts are the ideal solution.
  • Nut Shape: Hexagonal
  • Colours: Black and Natural
  • DIN 1587

Available Thread Sizes
  • M3
  • M4
  • M4 x 0.7
  • M5
  • M5 x 0.8
  • M6
  • M6 x 1.0
  • M8
  • M8 x 1.25
  • M10
  • M12
  • #8-32
  • 5/16-18

Distance Across Flats (Metric)
5.5 mm
7.0 mm
8.0 mm
8.4 mm
10.0 mm
12.7 mm
13.0 mm
17.0 mm
19.0 mm

Distance Across Flats (Imperial)
0.217 in
0.276 in
0.315 in
0.330 in
0.394 in
0.500 in
0.512 in
0.669 in
0.748 in

Overall Height (Metric)
6.0 mm
6.5 mm
8.0 mm
9.5 mm
10.0 mm
12.0 mm
13.5 mm
15.0 mm
18.0 mm
22.0 mm

Overall Height (Imperial)
0.236 in
0.256 in
0.315 in
0.375 in
0.394 in
0.472 in
0.530 in
0.591 in
0.709 in
0.866 in

Colours
Black
Natural

Key Features
  • Material: Nylon 6/6
  • Nut Form: Dome
  • Nut Shape: Hexagonal
  • Standard: DIN 1587
  • Protects bolt threads and provides a tidy appearance
  • Improves safety by covering exposed threads
  • Available in multiple thread sizes and colours

Technical Specifications / Characteristics
  • Material: Nylon 6/6
  • Nut Form: Dome
  • Nut Shape: Hexagonal
  • Standard: DIN 1587
  • Colours: Black, Natural
  • Thread Sizes: M3, M4, M4 x 0.7, M5, M5 x 0.8, M6, M6 x 1.0, M8, M8 x 1.25, M10, M12, #8-32, 5/16-18
  • Distance Across Flats (Metric): 5.5 mm, 7.0 mm, 8.0 mm, 8.4 mm, 10.0 mm, 12.7 mm, 13.0 mm, 17.0 mm, 19.0 mm
  • Distance Across Flats (Imperial): 0.217 in, 0.276 in, 0.315 in, 0.330 in, 0.394 in, 0.500 in, 0.512 in, 0.669 in, 0.748 in
  • Overall Height (Metric): 6.0 mm, 6.5 mm, 8.0 mm, 9.5 mm, 10.0 mm, 12.0 mm, 13.5 mm, 15.0 mm, 18.0 mm, 22.0 mm
  • Overall Height (Imperial): 0.236 in, 0.256 in, 0.315 in, 0.375 in, 0.394 in, 0.472 in, 0.530 in, 0.591 in, 0.709 in, 0.866 in

Catalogs

Exhibitions

Meet this supplier at the following exhibition(s):

Electra Mining Africa
Electra Mining Africa

7-11 Sep 2026 Johannesburg (South Africa)

  • More information
    MSPO 2026
    MSPO 2026

    8-11 Sep 2026 Kleice (Poland)

  • More information

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    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.