Invisible zipper P5 4.2 mm ALPHA

About this item

ALPHA P5 invisible zipper: 25 ±1 mm tape width and 4.2 mm chain width. Loose garments made from thin, lightweight fabrics where a concealed closure is required.

Item identity

Use SKU p5 and item number 257 in the enquiry. Category: Sewing accessories / Zippers / spiral fasteners / Invisible zippers.

ALPHA P5: construction and applications

ALPHA P5 invisible zipper: 25 ±1 mm tape width and 4.2 mm chain width. Loose garments made from thin, lightweight fabrics where a concealed closure is required. The 2018 standard slider reference is 57. Tape colour, slider and end configuration are separate ordering parameters.

Selecting the required execution

Tape width is the full textile width, while coil or tooth width refers to the closed chain. Specify the model, length, end configuration, tape colour and slider code. Equal nominal size does not guarantee slider compatibility between different series.

Colours and configuration availability

Select from the ALPHA colour card and a physical tape sample. The general manufacturer palette does not establish availability of every shade for every model. The 2018 catalogue data is identified by source date. Current website puller lists may differ; a manager will confirm the required combination. Select the shade using a physical sample, not a screen image alone.

Pullers and custom decoration

The catalogue describes laser engraving on CNK, SCN, OKS, PAT, NFR, MOS and MBL finishes, pad printing on plastic and metal, raised or recessed cast logos, plastic shapes 301/305/350 and flexible gel pullers. NOMEKS and SATYNA tapes are also shown at family level, without blanket model compatibility. Confirm compatibility, quantities and availability; the NOMEKS name alone does not certify the finished product as flame resistant.

Order ALPHA P5 from DELIM

Add the product to your enquiry and specify model, length, colour or colour code, slider, end configuration and quantity. Request continuous chain by length and finished zippers by piece count. A manager will confirm stock, price, minimum order and lead time.

Key parameters

Product group: Invisible zippers
Size in product name: 4.2mm
Tape material: 100% polyester; raschel tape
Teeth / coil material: Polyester 100%
Slider materials (catalogue): alloy ZnAl Z410, PVC
Construction: Invisible zipper
Manufacturer: ALPHA TECHNOLOGY
Manufacturer model: P5
Tape width: 25 ±1 mm
Coil / tooth width: 4.2 mm
Chain material: 100% polyester

Verified specifications

Standard slider, 2018 catalogue: 57
Slider / puller materials: ZnAl Z410 / PVC
End configurations, 2018 catalogue: T — continuous chain without factory end stops; S — closed-end, one slider; Sx2 — closed-end, two sliders facing head to head; Sx2K — closed-end, two sliders facing back to back
Catalogue load class: very light; qualitative classification, not a working load limit
Tape colours: Select from the ALPHA colour card and a physical tape sample. The general manufacturer palette does not establish availability of every shade for every model.
End-component materials: Aluminium / polyester
Decorative pullers, 2018 catalogue: 4, 18, 22, 69, 100, 113, 114, 183, 184, 203, 226, 350
Catalogue length tolerances: Up to 25 cm: ±0.5 cm; 26–100 cm: ±1 cm; 101–500 cm: ±1%; 501 cm and above: ±5 cm. These are tolerances, not a list of available lengths.
Crosswise strength of the closed chain: 20/40 kg: standard requirement / ALPHA value; original manufacturer force notation, not a supported mass
Closed-end stop strength: 3/8 kg: standard requirement / ALPHA value; original manufacturer force notation, not a supported mass
Top-stop attachment: 5/6 kg: standard requirement / ALPHA value; original manufacturer force notation, not a supported mass
Puller attachment: 6/14 kg: standard requirement / ALPHA value; original manufacturer force notation, not a supported mass
Colour codes in DELIM item records: 100001, 100002, 100006, 100007, 100013, 100015, 100016, 110107, 110601, 110602, 110710, 114201, 120712, 130000, 130403, 130532, 131014, 132004, 135309, 140244, 140754, 141310, 141911, 144121, 150955, 151215, 151906, 154020, 156442, 160207, 161210, 161459, 161620, 161712, 163803, 163815, 164013, 164427, 170205, 171128, 171320, 171321, 171322, 171605, 172230, 172617, 174027, 174030, 180306, 180324, 180820, 181306, 181663, 183218, 184005, 184032, 184726, 185633, 190309, 191116, 191230, 191617, 191663, 191761, 191763, 191862, 193323, 194005, 194023, 194025, 194039, 194050, 194057, 194104, 194118, 194227, 194826, 195411, 195914. Recorded executions; this is not a stock availability statement.
Standard website pullers, 24 September 2026: 057
Decorative website pullers, 24 September 2026: 004, 018, 022, 069, 100, 113, 114, 183, 184, 203, 350
Website end configurations, 24 September 2026: S, Sx2, Sx2K
Website slider finish codes: CNK, LAK, MBL, MOS, NFR, NIK, OKS, PAT, SCN
Slider finishes, 2018 catalogue: CNK dark nickel; LAK lacquer; MBL polished brass; MOS brass; NFR nickel free; OKS oxide; PAT patina; SCN antique tin; MDZ copper. General palette; confirm compatibility with the model.
Material: Polyester
Size: 4.2 mm

Technical documents and drawings

Applications and compatibility

Loose garments made from thin, lightweight fabrics where a concealed closure is required.
Use compatible ALPHA sliders, chain and end components. Validate the sample in your own assembly before specifying production.