
Product Description
DIN 908 hexagon socket screw plug, M8 x 1, Article number M187648-1. Property class / material: steel, surface finish zinc plated. Hexagon Socket Screw Plug manufactured to DIN 908 with ISO metric (M) thread, coarse pitch. Standard parts to the same standard, property class, dimensions and surface finish are interchangeable between manufacturers; confirm the controlling standard revision, any class-society or application approval, and the mating thread before substitution. Applications: sealing of threaded ports in gearboxes, hydraulic and pneumatic equipment, engines and plant pipework.
Technical Specifications
- Standard
- DIN 908
- Property class / grade
- STEEL
- Class (detailed)
- STEEL
- Thread type
- M
- Thread diameter
- 8 mm
- Pitch
- 1 mm
- Thread pitch class
- Coarse
- Thread direction
- Right
- Length
- 7.5 mm
- Thread length
- 7.5 mm
- Drive type
- Hex Drive
- Key width (across flats)
- 4 mm
- Key depth
- 5 mm
- Surface treatment
- Zinc Bright Passivation Fe/Zn P1 (ZPL 3+)
- Surface treatment code
- ZPL
- Screw Plug Flange Diameter
- 12 mm
- Screw Plug Flange Thickness
- 3 mm
- Screw Plug Sealing Inner Diameter
- 6.4 mm
- Screw Plug Sealing Outer Radius
- 1 mm
- Length
- 7.5 mm
- Thread standard
- ISO metric (M)
- Article number
- M187648-1
- Category
- Screw plugs / Hexagon socket screws plugs
Standards & Compliance
- Standard
- DIN 908
- Size / Series
- M8 x 1
- Material
- Steel
- Thread Standard
- ISO metric (M)
- HS Code
- 731815
Product Documentation
More from Bufab

Bufab
DIN 908 Hexagon Socket Screw Plug, Stainless A4, G 1/4, With, Magnet
P1818-571

Bufab
DIN 910-A Hexagon Head Screw Plug, D5, G 1/2", Plain
910-1.4462-G12

Bufab
DIN 910-A Hexagon Head Screw Plug, Stainless A5 (1.4571), G 1"
910-1.4571-G1

Bufab
DIN 910-A Hexagon Head Screw Plug, Stainless A5 (1.4571), G 1 1/2"
910-1.4571-G11/2

Bufab
DIN 910-A Hexagon Head Screw Plug, Stainless A5 (1.4571), G 3/8"
910-1.4571-G3/8

Bufab
DIN 910-A Hexagon Head Screw Plug, Stainless A5 (1.4571), G 1/2"
910-1.4571-R1/2

Bufab
DIN 910-A Hexagon Head Screw Plug, Stainless A5 (1.4571), G 1/4"
910-1.4571-R1/4

Bufab
DIN 910-A Hexagon Head Screw Plug, Steel, G 1", Plain
9101
Technical guides
Catalogue entry last verified: 2026-09-30. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy M187648-1?
- M187648-1 can be ordered from cballast.com as a Bufab catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this Bufab product?
- The manufacturer part number is M187648-1.
- What is the HS code for M187648-1?
- The customs tariff (HS) code for M187648-1 is 731815.
- Who manufactures M187648-1?
- M187648-1 is a Bufab product in the C-Parts range.
- Is a datasheet available for M187648-1?
- Yes — the M187648-1 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for M187648-1?
- The minimum order quantity is 1.
- Is M187648-1 available?
- Yes — M187648-1 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).
