# Chicago screw 4 mm (100 pcs) – Black Nickel: Outer diameter of post 3 mm

- **Brand:** Pet Hardware®
- **SKU:** SPH6-4 BNP
- **EAN:** 8595109524462
- **Category:** Rivets & Screws > Chicago Screws
- **Material:** Steel
- **Surface finish:** Black nickel
- **Size:** 4 mm
- **Weight:** 57 g
- **Minimum order:** 1 pack
- **In stock:** Yes


## Description and construction

Use these metal Chicago screws for belts and collars or to join two materials. Each screw has two parts: a hollow post with an internal thread and a solid head, which works as a closed nut, and a matching screw that tightens the joint. Insert the screw into the nut straight first, and only then tighten it. If it is inserted at an angle, it jams and only screws in partway. A screwed joint comes apart quickly, for example when you change a belt buckle. The price is for the whole pack (100 pcs).

How to choose the right screw length?

Choose the screw length to suit the total thickness of the materials you are joining, whether you are working with leather, webbing or something else. The length of the screw post (value B in the table) should be 2 mm less than that thickness. For waterproof webbing 2.5 mm thick, take #SPH-4, #SPH6-4 or #SPH8-4 for two layers, and #SPH-6, #SPH6-6 or #SPH8-6 for three layers.

Tip: To keep the joint from working loose over time, put a drop of Loctite® 243 #1918997 thread-locking adhesive on the thread before you screw it together.


## Limits and maintenance

* Tolerates occasional contact with rain, wet grass or damp hands. Regular soaking accelerates visible wear, so dry the surface after it becomes wet.
* Provides a temporary barrier against moisture. Works well in dry environments, but protection weakens over time with regular contact with water or sweat.
* Thin decorative coating that gradually wears through with regular wear and friction. Wear appears first where a buckle or snap contacts the strap, ring or fur.
* At points of regular friction (typically the buckle edge, snap contact point or strap) the finish gradually wears through and the base material shows beneath.


## Parameters

| Parameter | Value |
|---|---|
| Post Length | 4 mm |
| Outer diameter of post | 3 mm |
| Head diameter | 6 mm |
| Screw Length | 3 mm |
| Quantity per Pack | 100 |

## Pricing (EUR)

| Quantity | Excl. VAT / pack | Incl. VAT (21 %) / pack | Total excl. VAT | Total incl. VAT | Price type |
|---|---|---|---|---|---|
| 1 pack | 4.72 EUR | 5.70 EUR | — | — | Basic |
| 50 packs | 4.24 EUR | 5.14 EUR | 212.20 EUR | 256.76 EUR | Carton tier |



*Prices incl. VAT apply to EU end customers. EU VAT-registered businesses and export orders are priced excl. VAT — see cart or ?currency= for your case.*



## Compatible products

* **Belt Buckle 30 mm – Antique Silver (30 mm):** SKU XGJ 817/30 AS
* **Belt Buckle 35 mm – Antique Silver (total length: 49 mm) (35 mm):** SKU XGJ 816/35 AS


## Available size variants (series SPH6-4 BNP)

* 4 mm: SKU SPH6-4 BNP (this product)
* 5 mm: SKU SPH6-5 BNP
* 6 mm: SKU SPH6-6 BNP
* 4 mm: SKU SPH8-4 BNP
* 5 mm: SKU SPH8-5 BNP
* 6 mm: SKU SPH8-6 BNP
* 4 mm: SKU SPH-4 BNP
* 4 mm: SKU SPH-4 BN
* 5 mm: SKU SPH-5 BNP
* 6 mm: SKU SPH-6 BNP
* 6 mm: SKU SPH-6 BN
* 8 mm: SKU SPH-8 BNP
* 10 mm: SKU SPH-10 BNP



## Frequently Asked Questions

### Do you sell rivets and snaps in small quantities?

Yes, the smallest quantity is one bag of rivets or 100 snaps. We don't offer smaller packs.

Rivets and Chicago screws are sold in bags. Most bags contain 100 pcs, bags of rhinestone rivets also 50 pcs, and bags of eyelets and cap rivets usually 1,000 pcs. Brass and stainless steel Chicago screws and some double cap rivets also come in bags of 10.
Snap fasteners and button studs are sold individually, from 100 pcs of one type.

The number of pieces per bag and the price per piece are shown on each product. We'll send you a sample to try. See Can I get a product sample?

Source: https://www.pethardware.com/en/faq/#nyty-male-mnozstvi


## Links

- Product page: https://www.pethardware.com/en/screw-posts/steel-screw-post-4-6-mm-100-pcs-black-nickel-5658/
- Category: https://www.pethardware.com/en/screw-posts/
- How to choose the right chicago screw length: https://blog.pethardware.com/en/how-to-choose-chicago-screws/